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>
diff --git a/tf_config/fvp-tc2-spm b/tf_config/fvp-tc2-spm
index c164d2f..555ed3d 100644
--- a/tf_config/fvp-tc2-spm
+++ b/tf_config/fvp-tc2-spm
@@ -3,7 +3,7 @@
 CROSS_COMPILE=aarch64-none-elf-
 CTX_INCLUDE_EL2_REGS=1
 CTX_INCLUDE_PAUTH_REGS=1
-CTX_INCLUDE_MTE_REGS=1
+ENABLE_FEAT_MTE=1
 ENABLE_SVE_FOR_SWD=1
 PLAT=tc
 SCP_BL2=/dev/null