feat(mte): enable MTE support in SPM tests

Adds MTE support parameters to FVP models.
Enables MTE support in relevant tf-a builds.

Signed-off-by: Maksims Svecovs <maksims.svecovs@arm.com>
Change-Id: Ib31275b165d955c308af8ffcb38a532a2d3357dc
diff --git a/tf_config/fvp-spm-rme b/tf_config/fvp-spm-rme
index 8d8446d..3dbf23a 100644
--- a/tf_config/fvp-spm-rme
+++ b/tf_config/fvp-spm-rme
@@ -6,4 +6,5 @@
 SPMD_SPM_AT_SEL2=1
 BRANCH_PROTECTION=1
 CTX_INCLUDE_PAUTH_REGS=1
+CTX_INCLUDE_MTE_REGS=1
 SP_LAYOUT_FILE=${tftf_root}/build/fvp/${bin_mode}/sp_layout.json