Tegra194: Update checks for c-state stats

This patch adds proper checks for the cpu c-stats. It checks both
cpu id and stat id before sending the nvg request to ccplex.

Change-Id: I732957d1e10d6ce6cffb2c6f5963ca614aadd948
Signed-off-by: Krishna Sitaraman <ksitaraman@nvidia.com>
diff --git a/plat/nvidia/tegra/soc/t194/drivers/include/mce_private.h b/plat/nvidia/tegra/soc/t194/drivers/include/mce_private.h
index cc32ec4..3ac5333 100644
--- a/plat/nvidia/tegra/soc/t194/drivers/include/mce_private.h
+++ b/plat/nvidia/tegra/soc/t194/drivers/include/mce_private.h
@@ -46,6 +46,11 @@
 #define CACHE_CLEAN_INVAL_SET			(1UL << 1)
 #define CACHE_CLEAN_INVAL_TR_SET		(1UL << 2)
 
+/*******************************************************************************
+ * C-state statistics macros
+ ******************************************************************************/
+#define MCE_STAT_ID_SHIFT			16UL
+
 /* declarations for NVG handler functions */
 uint64_t nvg_get_version(void);
 int32_t nvg_enable_power_perf_mode(void);