ANDROID: KVM: arm64: Add fgt trap masks for pKVM but do not activate them yet

Add the definitions needed for fine grain trapping for protected
VMs, so that they can be used in the following patch. This patch
does not activate any of the fgts yet.

Bug: 278749606
Change-Id: I736c1eaa081529a81c077725c620b2b01fc36949
Signed-off-by: Fuad Tabba <tabba@google.com>