php: Fix native build due mistakenly linking against host's iconv
php: Fix native build due mistakenly linking against host's iconv

The configure script has mistakenly choose to enable iconv support,
due host to provide it, adding '/usr/lib' to the linking flags and
failing as:

,----[ Linking error while testing 'fork' support ]
| conftest.c:268: warning: conflicting types for built-in function 'fork'
| .../build/tmp/sysroots/x86_64-linux/usr/lib/libxml2.so:
|     undefined reference to `gzopen64@ZLIB_1.2.3.3'
| collect2: ld returned 1 exit status
`----

This patch disables iconv support for native builds fixing the error.

Signed-off-by: Otavio Salvador <1d31b11c1b92bf5d043d36edfe7174db39a6b891@ossystems.com.br>
Signed-off-by: Martin Jansa <516df3ff67e1fa5d153800b15fb204c0a1a389dc@gmail.com>

RedFIR/meta-openembedded,fredcadete/meta-openembedded,openembedded/meta-openembedded,RedFIR/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,dongkc/meta-openembedded,dm8tbr/kodi-wip,RealVNC/yocto_imx6sabreauto_meta-openembedded,victronenergy/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,dm8tbr/kodi-wip,rehsack/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,MCherifiOSS/meta-openembedded,rofehr/meta-openembedded,epylar/meta-openembedded,amery/meta-openembedded,schnitzeltony/meta-openembedded,moto-timo/meta-openembedded,schnitzeltony/meta-openembedded,akuster/meta-openembedded,MCherifiOSS/meta-openembedded,openembedded/meta-openembedded,rdm-dev/meta-openembedded,mrchapp/meta-openembedded,shr-distribution/meta-oe,lixinfnst/meta-openembedded,lgirdk/meta-openembedded,joelagnel/meta-openembedded,joelagnel/meta-openembedded,shr-distribution/meta-oe,openembedded/meta-openembedded,schnitzeltony/meta-openembedded,RedFIR/meta-openembedded,lgirdk/meta-openembedded,akuster/meta-openembedded,victronenergy/meta-openembedded,epylar/meta-openembedded,shr-distribution/meta-oe,amery/meta-openembedded,RealVNC/yocto_imx6sabreauto_meta-openembedded,amery/meta-openembedded,moto-timo/meta-openembedded,kraj/meta-openembedded,akuster/meta-openembedded,mrchapp/meta-openembedded,MCherifiOSS/meta-openembedded,RealVNC/yocto_imx6sabreauto_meta-openembedded,fredcadete/meta-openembedded,rehsack/meta-openembedded,RedFIR/meta-openembedded,rofehr/meta-openembedded,kraj/meta-openembedded,lgirdk/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,RealVNC/yocto_imx6sabreauto_meta-openembedded,openembedded/meta-openembedded,fredcadete/meta-openembedded,kraj/meta-openembedded,joelagnel/meta-openembedded,moto-timo/meta-openembedded,victronenergy/meta-openembedded,dongkc/meta-openembedded,victronenergy/meta-openembedded,mrchapp/meta-openembedded,kraj/meta-openembedded,rehsack/meta-openembedded,rehsack/meta-openembedded,shr-distribution/meta-oe,dongkc/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,victronenergy/meta-openembedded,amery/meta-openembedded,akuster/meta-openembedded,shr-distribution/meta-oe,rdm-dev/meta-openembedded,VCTLabs/meta-openembedded,moto-timo/meta-openembedded,shr-distribution/meta-oe,lixinfnst/meta-openembedded,epylar/meta-openembedded,dm8tbr/kodi-wip,kraj/meta-openembedded,lgirdk/meta-openembedded,VCTLabs/meta-openembedded,openembedded/meta-openembedded,RedFIR/meta-openembedded,rofehr/meta-openembedded,joelagnel/meta-openembedded,amery/meta-openembedded,akuster/meta-openembedded,lgirdk/meta-openembedded,RedFIR/meta-openembedded,rofehr/meta-openembedded,dongkc/meta-openembedded,dm8tbr/kodi-wip,lgirdk/meta-openembedded,openembedded/meta-openembedded,schnitzeltony/meta-openembedded,schnitzeltony/meta-openembedded,mrchapp/meta-openembedded,VCTLabs/meta-openembedded,shr-distribution/meta-oe,rofehr/meta-openembedded,rehsack/meta-openembedded,rehsack/meta-openembedded,mrchapp/meta-openembedded,epylar/meta-openembedded,fredcadete/meta-openembedded,rehsack/meta-openembedded,MCherifiOSS/meta-openembedded,epylar/meta-openembedded,shr-distribution/meta-oe,RedFIR/meta-openembedded,joelagnel/meta-openembedded,dm8tbr/kodi-wip,VCTLabs/meta-openembedded,openembedded/meta-openembedded,VCTLabs/meta-openembedded,lixinfnst/meta-openembedded,VCTLabs/meta-openembedded,lgirdk/meta-openembedded,VCTLabs/meta-openembedded,joelagnel/meta-openembedded,openembedded/meta-openembedded,victronenergy/meta-openembedded,VCTLabs/meta-openembedded,moto-timo/meta-openembedded,fredcadete/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,amery/meta-openembedded,RedFIR/meta-openembedded,dm8tbr/kodi-wip,victronenergy/meta-openembedded,rofehr/meta-openembedded,joelagnel/meta-openembedded,epylar/meta-openembedded,rdm-dev/meta-openembedded,rdm-dev/meta-openembedded,epylar/meta-openembedded,schnitzeltony/meta-openembedded,fredcadete/meta-openembedded,rdm-dev/meta-openembedded,RealVNC/yocto_imx6sabreauto_meta-openembedded,rdm-dev/meta-openembedded,rofehr/meta-openembedded,fredcadete/meta-openembedded,amery/meta-openembedded,mrchapp/meta-openembedded,MCherifiOSS/meta-openembedded,kraj/meta-openembedded,MCherifiOSS/meta-openembedded,rofehr/meta-openembedded,fredcadete/meta-openembedded,amery/meta-openembedded,rdm-dev/meta-openembedded,lixinfnst/meta-openembedded,epylar/meta-openembedded,dm8tbr/kodi-wip,dm8tbr/kodi-wip,lixinfnst/meta-openembedded,lixinfnst/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,joelagnel/meta-openembedded,mrchapp/meta-openembedded,dongkc/meta-openembedded,kraj/meta-openembedded,schnitzeltony/meta-openembedded,rdm-dev/meta-openembedded