drm/amdgpu/sdma4: use num_instances for clock/powergating config

Rather then relying on the asic type for the second instance.
Makes it more consistent with the rest of the code.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>

drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c

@@ -1399,7 +1399,7 @@ static void sdma_v4_0_update_medium_grain_clock_gating(
 		if (def != data)
 			WREG32(SOC15_REG_OFFSET(SDMA0, 0, mmSDMA0_CLK_CTRL), data);
 
-		if (adev->asic_type == CHIP_VEGA10) {
+		if (adev->sdma.num_instances > 1) {
 			def = data = RREG32(SOC15_REG_OFFSET(SDMA1, 0, mmSDMA1_CLK_CTRL));
 			data &= ~(SDMA1_CLK_CTRL__SOFT_OVERRIDE7_MASK |
 				  SDMA1_CLK_CTRL__SOFT_OVERRIDE6_MASK |
@@ -1427,7 +1427,7 @@ static void sdma_v4_0_update_medium_grain_clock_gating(
 		if (def != data)
 			WREG32(SOC15_REG_OFFSET(SDMA0, 0, mmSDMA0_CLK_CTRL), data);
 
-		if (adev->asic_type == CHIP_VEGA10) {
+		if (adev->sdma.num_instances > 1) {
 			def = data = RREG32(SOC15_REG_OFFSET(SDMA1, 0, mmSDMA1_CLK_CTRL));
 			data |= (SDMA1_CLK_CTRL__SOFT_OVERRIDE7_MASK |
 				 SDMA1_CLK_CTRL__SOFT_OVERRIDE6_MASK |
@@ -1458,7 +1458,7 @@ static void sdma_v4_0_update_medium_grain_light_sleep(
 			WREG32(SOC15_REG_OFFSET(SDMA0, 0, mmSDMA0_POWER_CNTL), data);
 
 		/* 1-not override: enable sdma1 mem light sleep */
-		if (adev->asic_type == CHIP_VEGA10) {
+		if (adev->sdma.num_instances > 1) {
 			def = data = RREG32(SOC15_REG_OFFSET(SDMA1, 0, mmSDMA1_POWER_CNTL));
 			data |= SDMA1_POWER_CNTL__MEM_POWER_OVERRIDE_MASK;
 			if (def != data)
@@ -1472,7 +1472,7 @@ static void sdma_v4_0_update_medium_grain_light_sleep(
 			WREG32(SOC15_REG_OFFSET(SDMA0, 0, mmSDMA0_POWER_CNTL), data);
 
 		/* 0-override:disable sdma1 mem light sleep */
-		if (adev->asic_type == CHIP_VEGA10) {
+		if (adev->sdma.num_instances > 1) {
 			def = data = RREG32(SOC15_REG_OFFSET(SDMA1, 0, mmSDMA1_POWER_CNTL));
 			data &= ~SDMA1_POWER_CNTL__MEM_POWER_OVERRIDE_MASK;
 			if (def != data)