FROMGIT: KVM: arm64: Mark FFA_NOTIFICATION_* calls as unsupported

Prevent FFA_NOTIFICATION_* interfaces from being passed through to TZ.

Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Per Larsen <perlarsen@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>

Bug: 280886201
(cherry picked from commit 79195f34
 https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git

 next)
Change-Id: Ib71a11d3f163182c13282da8db59d3798ccdc653
Signed-off-by: Per Larsen <perlarsen@google.com>