gcc-cross-canadian: add INSANE_SKIP_ to avoid build warning
gcc-cross-canadian: add INSANE_SKIP_ to avoid build warning

WARNING: QA Issue: gcc-cross-canadian-arm: found library in wrong location:
/opt/debian/8.0/sysroots/x86_64-debiansdk-linux/usr/libexec/.../4.9/liblto_plugin.so.0
...

(base on commit from OE-Core: 62c51c4178fb66341498c71c74ce42652568c7fa)

Signed-off-by: Trung Do <64081e6b7eb2b24289b8a4e51cef9836ddf28af2@toshiba-tsdv.com>

nghiaht-tsdv/meta-debian,meta-debian/meta-debian,tienlee/meta-debian,meta-debian/meta-debian,meta-debian/meta-debian,meta-debian/meta-debian,nghiaht-tsdv/meta-debian,nghiaht-tsdv/meta-debian,meta-debian/meta-debian,nghiaht-tsdv/meta-debian,tienlee/meta-debian,tienlee/meta-debian,tienlee/meta-debian,tienlee/meta-debian,nghiaht-tsdv/meta-debian,meta-debian/meta-debian,nghiaht-tsdv/meta-debian,tienlee/meta-debian