Tegra194: fix warnings for extra parentheses

armclang displays warnings for extra parentheses, leading to
build failures as warnings are treated as errors.
This patch removes the extra parentheses to fix this issue.

Change-Id: Id2fd6a3086590436eecabc55502f40752a018131
Signed-off-by: Kalyani Chidambaram <kalyanic@nvidia.com>
diff --git a/plat/nvidia/tegra/soc/t194/plat_psci_handlers.c b/plat/nvidia/tegra/soc/t194/plat_psci_handlers.c
index 144e418..8920a9f 100644
--- a/plat/nvidia/tegra/soc/t194/plat_psci_handlers.c
+++ b/plat/nvidia/tegra/soc/t194/plat_psci_handlers.c
@@ -135,7 +135,7 @@
 	stateid_afflvl2 = pwr_domain_state[PLAT_MAX_PWR_LVL] &
 		TEGRA194_STATE_ID_MASK;
 
-	if ((stateid_afflvl0 == PSTATE_ID_CORE_POWERDN)) {
+	if (stateid_afflvl0 == PSTATE_ID_CORE_POWERDN) {
 
 		/* Enter CPU powerdown */
 		(void)mce_command_handler((uint64_t)MCE_CMD_ENTER_CSTATE,