samba_3.2.15.bb: Fix build failure on ARM/thumb due to GCC ICE
samba_3.2.15.bb: Fix build failure on ARM/thumb due to GCC ICE

* As a hotfix we currently avoid compiling it in thumb mode.
  Due to gcc bug http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46934

Signed-off-by: Khem Raj <729d64b6f67515e258459a5f6d20ec88b2caf8df@gmail.com>

nx111/openembeded_openpli2.1_nx111,BlackPole/bp-openembedded,nx111/openembeded_openpli2.1_nx111,SIFTeam/openembedded,BlackPole/bp-openembedded,libo/openembedded,libo/openembedded,SIFTeam/openembedded,BlackPole/bp-openembedded,SIFTeam/openembedded,openpli-arm/openembedded,SIFTeam/openembedded,libo/openembedded,libo/openembedded,nx111/openembeded_openpli2.1_nx111,openpli-arm/openembedded,SIFTeam/openembedded,libo/openembedded,nx111/openembeded_openpli2.1_nx111,libo/openembedded,libo/openembedded,openpli-arm/openembedded,SIFTeam/openembedded,nx111/openembeded_openpli2.1_nx111,BlackPole/bp-openembedded,nx111/openembeded_openpli2.1_nx111,BlackPole/bp-openembedded,BlackPole/bp-openembedded,nx111/openembeded_openpli2.1_nx111,openpli-arm/openembedded,openpli-arm/openembedded,openpli-arm/openembedded,nx111/openembeded_openpli2.1_nx111,openpli-arm/openembedded,SIFTeam/openembedded,BlackPole/bp-openembedded