fix(zynqmp): 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: I435dbcbe1c4aad7c69eb49599cd0dbca0677150d
Signed-off-by: Nithin G <nithing@amd.com>
Signed-off-by: Maheedhar Bollapalli <MaheedharSai.Bollapalli@amd.com>
diff --git a/plat/xilinx/zynqmp/bl31_zynqmp_setup.c b/plat/xilinx/zynqmp/bl31_zynqmp_setup.c
index 50d4240..ede3a21 100644
--- a/plat/xilinx/zynqmp/bl31_zynqmp_setup.c
+++ b/plat/xilinx/zynqmp/bl31_zynqmp_setup.c
@@ -72,6 +72,10 @@
 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;
 
 	setup_console();
diff --git a/plat/xilinx/zynqmp/custom_sip_svc.c b/plat/xilinx/zynqmp/custom_sip_svc.c
index b9664af..c61c92c 100644
--- a/plat/xilinx/zynqmp/custom_sip_svc.c
+++ b/plat/xilinx/zynqmp/custom_sip_svc.c
@@ -12,6 +12,12 @@
 			    uint64_t x3, uint64_t x4, void *cookie,
 			    void *handle, uint64_t flags)
 {
+	(void)x1;
+	(void)x2;
+	(void)x3;
+	(void)x4;
+	(void)cookie;
+	(void)flags;
 	WARN("Unimplemented SiP Service Call: 0x%x\n", smc_fid);
 	SMC_RET1(handle, SMC_UNK);
 }
diff --git a/plat/xilinx/zynqmp/pm_service/zynqmp_pm_api_sys.c b/plat/xilinx/zynqmp/pm_service/zynqmp_pm_api_sys.c
index 66f011a..daf3e61 100644
--- a/plat/xilinx/zynqmp/pm_service/zynqmp_pm_api_sys.c
+++ b/plat/xilinx/zynqmp/pm_service/zynqmp_pm_api_sys.c
@@ -268,6 +268,7 @@
 				   uint32_t state,
 				   uintptr_t address)
 {
+	(void)nid;
 	uint32_t payload[PAYLOAD_ARG_CNT];
 	uint32_t cpuid = plat_my_core_pos();
 	const struct pm_proc *proc = pm_get_proc(cpuid);
@@ -1514,6 +1515,7 @@
 void pm_query_data(enum pm_query_ids qid, uint32_t arg1, uint32_t arg2,
 		   uint32_t arg3, uint32_t *data)
 {
+	(void)arg3;
 	switch (qid) {
 	case PM_QID_CLOCK_GET_NAME:
 		pm_clock_get_name(arg1, (char *)data);
diff --git a/plat/xilinx/zynqmp/pm_service/zynqmp_pm_svc_main.c b/plat/xilinx/zynqmp/pm_service/zynqmp_pm_svc_main.c
index bf17ea4..65b2426 100644
--- a/plat/xilinx/zynqmp/pm_service/zynqmp_pm_svc_main.c
+++ b/plat/xilinx/zynqmp/pm_service/zynqmp_pm_svc_main.c
@@ -281,6 +281,9 @@
 uint64_t pm_smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3,
 			uint64_t x4, const void *cookie, void *handle, uint64_t flags)
 {
+	(void)x4;
+	(void)cookie;
+	(void)flags;
 	enum pm_ret_status ret;
 	uint32_t payload[PAYLOAD_ARG_CNT];