ANDROID: KVM: arm64: Pass the vm handle as an argument to the FF-A handlers

Inform the FF-A handler where is the call originating from. This will allow us
to identify the pair of buffers used in an FF-A transaction. The host has
a reserved vm handle of 0.

Bug: 269285339
Bug: 278749606
Change-Id: I7b989171fc1e334575e82d0788f2d156c104e8b0
Signed-off-by: Sebastian Ene <sebastianene@google.com>