test(realm): add test for RSI_PLANE_REG_READ/WRITE command

test for RSI_PLANE_REG_READ/WRITE command

Signed-off-by: Shruti Gupta <shruti.gupta@arm.com>
Change-Id: I92e0aeef48c9b2abe26e5d3b2ea62669a22d4f8b
diff --git a/realm/realm_plane.c b/realm/realm_plane.c
index 9a604c6..c7225ed 100644
--- a/realm/realm_plane.c
+++ b/realm/realm_plane.c
@@ -135,7 +135,7 @@
 	return PSI_RETURN_TO_P0;
 }
 
-static bool plane_common_init(u_register_t plane_index,
+bool plane_common_init(u_register_t plane_index,
 		u_register_t perm_index,
 		u_register_t base,
 		rsi_plane_run *run)
@@ -161,12 +161,6 @@
 		rsi_plane_run *run)
 {
 	u_register_t ret;
-	bool ret1;
-
-	ret1 = plane_common_init(plane_index, perm_index, base, run);
-	if (!ret1) {
-		return ret1;
-	}
 
 	run->enter.flags = flags;