feat(notifications): hypervisor forward bind/unbind

Hypervisor forwards call to SPMC of bind/unbind interfaces, when
the specified sender is an SP.
This will be useful for testing notifications with both hypervisor and
SPMC.

Change-Id: I62c44211f251a84d6bdc459bbe6b8d4fb2571933
Signed-off-by: J-Alves <joao.alves@arm.com>
diff --git a/src/arch/fake/hypervisor/ffa.c b/src/arch/fake/hypervisor/ffa.c
index 6ea1dda..4dd3fcd 100644
--- a/src/arch/fake/hypervisor/ffa.c
+++ b/src/arch/fake/hypervisor/ffa.c
@@ -91,6 +91,21 @@
 	return false;
 }
 
+bool plat_ffa_notifications_update_bindings_forward(
+	ffa_vm_id_t receiver_id, ffa_vm_id_t sender_id, uint32_t flags,
+	ffa_notifications_bitmap_t bitmap, bool is_bind, struct ffa_value *ret)
+{
+	(void)ret;
+	(void)receiver_id;
+	(void)sender_id;
+	(void)flags;
+	(void)bitmap;
+	(void)is_bind;
+	(void)ret;
+
+	return false;
+}
+
 ffa_partition_properties_t plat_ffa_partition_properties(
 	ffa_vm_id_t current_id, const struct vm *target)
 {