refactor(mte): replace mte with mte2

With below in TF-A:
https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/27122/

MTE and MTE_PERM are removed and not handled anymore,
So use MTE2 to test the features.

Change-Id: I1d0f372823dd5be048af1551f6cb5b3c464b6112
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
15 files changed