build(bl2): only set BL2_CPPFLAGS for armv8

If ARM_ARCH_MAJOR is 9 and ARM_ARCH_MINOR is 0 we don't want need to
have "-march=armv8-a+crc" in BL2_CPPFLAGS.

Change-Id: I9ac11522fde00953da40b95eebf82ff8ab2559ba
Signed-off-by: Diego Sueiro <diego.sueiro@arm.com>
1 file changed