KVM: arm64: vgic-v3: Add misc Group-0 handlers

KVM: arm64: vgic-v3: Add misc Group-0 handlers

A number of Group-0 registers can be handled by the same accessors
as that of Group-1, so let's add the required system register encodings
and catch them in the dispatching function.

Tested-by: Alexander Graf <[email protected]>
Acked-by: David Daney <[email protected]>
Acked-by: Christoffer Dall <[email protected]>
Reviewed-by: Eric Auger <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Signed-off-by: Christoffer Dall <[email protected]>