fix(versal): declare unused parameters as void

This corrects the MISRA violation C2012-2.7:
There should be no unused parameters in functions.
Declared unused function parameters as void.

Change-Id: If3507f812ed4cfa518e6f5c5de977a76713fafd8
Signed-off-by: Maheedhar Bollapalli <MaheedharSai.Bollapalli@amd.com>
diff --git a/plat/xilinx/versal/bl31_versal_setup.c b/plat/xilinx/versal/bl31_versal_setup.c
index 57377a9..58589ad 100644
--- a/plat/xilinx/versal/bl31_versal_setup.c
+++ b/plat/xilinx/versal/bl31_versal_setup.c
@@ -69,6 +69,10 @@
 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
 				u_register_t arg2, u_register_t arg3)
 {
+	(void)arg0;
+	(void)arg1;
+	(void)arg2;
+	(void)arg3;
 	uint64_t tfa_handoff_addr;
 	uint32_t payload[PAYLOAD_ARG_CNT], max_size = HANDOFF_PARAMS_MAX_SIZE;
 	enum pm_ret_status ret_status;
@@ -171,6 +175,7 @@
 static uint64_t rdo_el3_interrupt_handler(uint32_t id, uint32_t flags,
 					  void *handle, void *cookie)
 {
+	(void)id;
 	uint32_t intr_id;
 	uint32_t i;
 	interrupt_type_handler_t handler = NULL;