feat(simd): add rules to rationalize simd ctxt mgmt

Illegal combinations of build flags associated with SIMD context
management are flagged by the build system.

Change-Id: I3192af3889e1e864c7875778616e167ba6894195
Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>
2 files changed