Tegra194: add support to reset GPU

This patch adds macros, to define registers required to support GPU
reset, for Tegra194 SoCs.

Change-Id: Ifa7e0161b9e8de695a33856193f500b847a03526
Signed-off-by: Jeetesh Burman <jburman@nvidia.com>

plat/nvidia/tegra/include/t194/tegra_def.h

@@ -204,6 +204,10 @@
  * Tegra Clock and Reset Controller constants
  ******************************************************************************/
 #define TEGRA_CAR_RESET_BASE		U(0x20000000)
+#define TEGRA_GPU_RESET_REG_OFFSET	U(0x18)
+#define TEGRA_GPU_RESET_GPU_SET_OFFSET  U(0x1C)
+#define  GPU_RESET_BIT			(U(1) << 0)
+#define  GPU_SET_BIT			(U(1) << 0)
 
 /*******************************************************************************
  * XUSB PADCTL