drivers:gpu:Use ARRAY_SIZE() for the size calculation of the array.

Signed-off-by: Allen Pais <allen.lkml@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c

@@ -273,7 +273,7 @@ static const struct pctl_data pctl0_data[] = {
 	{0x135, 0x12a810},
 	{0x149, 0x7a82c}
 };
-#define PCTL0_DATA_LEN (sizeof(pctl0_data)/sizeof(pctl0_data[0]))
+#define PCTL0_DATA_LEN (ARRAY_SIZE(pctl0_data))
 
 #define PCTL0_RENG_EXEC_END_PTR 0x151
 #define PCTL0_STCTRL_REG_SAVE_RANGE0_BASE  0xa640
@@ -309,7 +309,7 @@ static const struct pctl_data pctl1_data[] = {
 	{0x1f0, 0x5000a7f6},
 	{0x1f1, 0x5000a7e4}
 };
-#define PCTL1_DATA_LEN (sizeof(pctl1_data)/sizeof(pctl1_data[0]))
+#define PCTL1_DATA_LEN (ARRAY_SIZE(pctl1_data))
 
 #define PCTL1_RENG_EXEC_END_PTR 0x1f1
 #define PCTL1_STCTRL_REG_SAVE_RANGE0_BASE  0xa000