arch-arm: Remove un-needed hyp flag in TLBI operations

arch-arm: Remove un-needed hyp flag in TLBI operations

The hyp flag was probably a legacy pre-v8 flag distinguishing
invalidation targeting PL2 translation regime (hyp mode).
Since the introduction of target_el parameter, hyp boolean is not needed
anymore.  The patch works by setting the hyp flag in the flush* methods
in the TLB automatically by checking if target_el == EL2.

Change-Id: I798009e09ff24a383dea871e348188bae2685e8e
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Jan-Peter Larsson <jan-peter.larsson@arm.com>
Reviewed-by: Anouk Van Laer <anouk.vanlaer@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/18389
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>