Build: Force ARMClang to use -march

Instead of -mcpu, as -march decreases code size. Also force the cpu/arch
checking to be disabled.

Change-Id: Ic04be59a5e4cc2b8f9b807ddbd6599c8b97c09a6
Signed-off-by: Raef Coles <raef.coles@arm.com>
1 file changed