Tegra: fiq_glue: fix MISRA defects for Rule 2.7

This patch adds (void) for unused function parameters to
fix Rule 2.7 of the MISRA standard.

Change-Id: Ibc3f10b3bfe73363383b4c28413ab8d99fbc8c89
Signed-off-by: Anthony Zhou <anzhou@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

plat/nvidia/tegra/common/tegra_fiq_glue.c

@@ -41,6 +41,11 @@ static uint64_t tegra_fiq_interrupt_handler(uint32_t id,
 	uint32_t cpu = plat_my_core_pos();
 	uint32_t irq;
 
+	(void)id;
+	(void)flags;
+	(void)handle;
+	(void)cookie;
+
 	bakery_lock_get(&tegra_fiq_lock);
 
 	/*