fsl-dynamic-packagearch.bbclass: Fix support for empty MACHINE_SOCARCH_SUFFIX
When MACHINE_SOCARCH_SUFFIX is empty a duplicated architecture will be
included in PACKAGE_ARCHS. The expected behaviour is to not include
duplicated values and raise an error in case a MACHINE_SOCARCH package
tries to be build.
Change-Id: I98d936409554e4e7725c8af6c0a0a0344ddec751 Reported-by: Lauren Post <lauren.post@freescale.com> Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
