fix(versal2): remove extraneous parentheses

While compiling TF-A with Armclang, the following error was observed.
To fix it, the extraneous parentheses around the comparison were
removed to silence the warning.

plat/amd/versal2/scmi.c:322:13: error: equality comparison with
extraneous parentheses [-Werror,-Wparentheses-equality]
        if ((clock == NULL)) {

Change-Id: I51f955dd15d5020598c9e4ff2f7f92b55a909f9b
Signed-off-by: Prasad Kummari <prasad.kummari@amd.com>
diff --git a/plat/amd/versal2/scmi.c b/plat/amd/versal2/scmi.c
index 0d384a5..852c919 100644
--- a/plat/amd/versal2/scmi.c
+++ b/plat/amd/versal2/scmi.c
@@ -319,7 +319,7 @@
 	const struct scmi_clk *clock = clk_find(agent_id, scmi_id);
 	unsigned long ret;
 
-	if ((clock == NULL)) {
+	if (clock == NULL) {
 		ret = SCMI_NOT_FOUND;
 	} else {
 		VERBOSE("SCMI: CLK: id: %d, get_rate: %lu\n", scmi_id, clock->rate);
@@ -334,7 +334,7 @@
 	struct scmi_clk *clock = clk_find(agent_id, scmi_id);
 	int32_t ret = SCMI_SUCCESS;
 
-	if ((clock == NULL)) {
+	if (clock == NULL) {
 		ret = SCMI_NOT_FOUND;
 	} else {
 		VERBOSE("SCMI: CLK: id: %d, set_rate: %lu\n", scmi_id, rate);
@@ -348,7 +348,7 @@
 	const struct scmi_clk *clock = clk_find(agent_id, scmi_id);
 	int32_t ret;
 
-	if ((clock == NULL)) {
+	if (clock == NULL) {
 		ret = SCMI_NOT_FOUND;
 	} else {
 		VERBOSE("SCMI: CLK: id: %d, get_state: %d\n", scmi_id, clock->enabled);