drm/amdgpu: update the num of queue per pipe for mec on sienna_cichlid

The number of queue per pipe for mec on sienna_cichlid should be 4.
Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c

@@ -4147,7 +4147,6 @@ static int gfx_v10_0_sw_init(void *handle)
 	case CHIP_NAVI10:
 	case CHIP_NAVI14:
 	case CHIP_NAVI12:
-	case CHIP_SIENNA_CICHLID:
 		adev->gfx.me.num_me = 1;
 		adev->gfx.me.num_pipe_per_me = 1;
 		adev->gfx.me.num_queue_per_pipe = 1;
@@ -4155,6 +4154,14 @@ static int gfx_v10_0_sw_init(void *handle)
 		adev->gfx.mec.num_pipe_per_mec = 4;
 		adev->gfx.mec.num_queue_per_pipe = 8;
 		break;
+	case CHIP_SIENNA_CICHLID:
+		adev->gfx.me.num_me = 1;
+		adev->gfx.me.num_pipe_per_me = 2;
+		adev->gfx.me.num_queue_per_pipe = 1;
+		adev->gfx.mec.num_mec = 2;
+		adev->gfx.mec.num_pipe_per_mec = 4;
+		adev->gfx.mec.num_queue_per_pipe = 4;
+		break;
 	default:
 		adev->gfx.me.num_me = 1;
 		adev->gfx.me.num_pipe_per_me = 1;