arch-arm: Fix access permissions for GICv3 cpu registers

* ICC_SRE_EL3/ICC_CTLR_EL3/MISCREG_ICC_IGRPEN1_EL3 are accessible at EL3
only

* ICH_LR<n>_EL2 are accessible at EL2 and EL3 only

Change-Id: Idcd9656abafc3014d2715cd6f138a6d786bc6c34
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/65171
Tested-by: kokoro <noreply+kokoro@google.com>
1 file changed