fix(ff-a): ivy shim receives NPI feature

Ivy can be deployed with shim and without.
With shim the partition is loaded as S-EL1
partition. Which means the NPI feature via
FFA_FEATURES ABI should be reported.

This patch handles the shim being present or
not in the respective test.

Signed-off-by: J-Alves <joao.alves@arm.com>
Change-Id: I1de94c77928e60164949f4801db1e82058eb89ad
2 files changed