ANDROID: KVM: arm64: Allow registration of pKVM module hyp events

In preparation to support in-pKVM module declared events, allow to
register arbitrary hyp event tables (hyp_events and hyp_event_ids).

First by the host (hyp_trace_init_mod_events()) then by the hypervisor
module (register_hyp_event_ids());

Due to hypervisor memory limitations, the number of registrable tables
is 128.

Bug: 278749606
Bug: 268495982
Change-Id: I18115a479e1892fdc706ebc13db27df7a1288e04
Signed-off-by: Vincent Donnefort <vdonnefort@google.com>