feat(ff-a): introduce count flag to ffa_partition_info_get

The partition count flag controls whether to return partition
info descriptors on a call to FFA_PARTITION_INFO_GET. This
patch introduces this functionality.

Signed-off-by: Daniel Boulby <daniel.boulby@arm.com>
Change-Id: Ib4a13c10e107daf726e5d6ec0ce6bd0d451c1b0f
diff --git a/src/arch/fake/hypervisor/ffa.c b/src/arch/fake/hypervisor/ffa.c
index cadebee..13c67e6 100644
--- a/src/arch/fake/hypervisor/ffa.c
+++ b/src/arch/fake/hypervisor/ffa.c
@@ -286,9 +286,11 @@
 
 void plat_ffa_partition_info_get_forward(  // NOLINTNEXTLINE
 	const struct ffa_uuid *uuid,	   // NOLINTNEXTLINE
+	const uint32_t flags,		   // NOLINTNEXTLINE
 	struct ffa_partition_info *partitions, ffa_vm_count_t *ret_count)
 {
 	(void)uuid;
+	(void)flags;
 	(void)partitions;
 	(void)ret_count;
 }