fix(versal2): add const qualifier

This correct the MISRA violation C2012-8.13:
A pointer should point to a const-qualified type whenever possible.
Added const qualifier to pointer variables and function arguments.

Change-Id: I3c1dfa4e5be438df4483a2b5937ee2e7c75e25ab
Signed-off-by: Maheedhar Bollapalli <maheedharsai.bollapalli@amd.com>
diff --git a/plat/amd/versal2/scmi.c b/plat/amd/versal2/scmi.c
index 59aff08..3c93ebf 100644
--- a/plat/amd/versal2/scmi.c
+++ b/plat/amd/versal2/scmi.c
@@ -269,7 +269,7 @@
 
 const char *plat_scmi_clock_get_name(unsigned int agent_id, unsigned int scmi_id)
 {
-	struct scmi_clk *clock = clk_find(agent_id, scmi_id);
+	const struct scmi_clk *clock = clk_find(agent_id, scmi_id);
 	const char *ret;
 
 	if (clock == NULL) {
@@ -287,7 +287,7 @@
 				    unsigned long *array, size_t *nb_elts,
 				    uint32_t start_idx)
 {
-	struct scmi_clk *clock = clk_find(agent_id, scmi_id);
+	const struct scmi_clk *clock = clk_find(agent_id, scmi_id);
 
 	if (clock == NULL) {
 		return SCMI_NOT_FOUND;
@@ -312,7 +312,7 @@
 
 unsigned long plat_scmi_clock_get_rate(unsigned int agent_id, unsigned int scmi_id)
 {
-	struct scmi_clk *clock = clk_find(agent_id, scmi_id);
+	const struct scmi_clk *clock = clk_find(agent_id, scmi_id);
 	unsigned long ret;
 
 	if ((clock == NULL)) {
@@ -341,7 +341,7 @@
 
 int32_t plat_scmi_clock_get_state(unsigned int agent_id, unsigned int scmi_id)
 {
-	struct scmi_clk *clock = clk_find(agent_id, scmi_id);
+	const struct scmi_clk *clock = clk_find(agent_id, scmi_id);
 	int32_t ret;
 
 	if ((clock == NULL)) {