refactor(mte): rename CTX_INCLUDE_MTE_REGS

Move CTX_INCLUDE_MTE_REGS to ENABLE_FEAT_MTE

Change-Id: Id73c6497baec9d6247bd7572858bdb99c8c7a350
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
14 files changed