feat(trf): add trace filter control registers access test

Added a test to read trace filter control registers to ensure that EL3
is giving permission to non-secure EL2 to access these registers.

Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: I9354d8592bd187206add717b9d3b0206382a06d3
10 files changed