amdgpu/dc: fix indentation warning from smatch.

This fixes all the current smatch:
warn: inconsistent indenting
Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c

@@ -293,8 +293,7 @@ void dce120_timing_generator_tear_down_global_swap_lock(
 			FD(DCP0_DCP_GSL_CONTROL__DCP_GSL_SYNC_SOURCE), 0,
 			FD(DCP0_DCP_GSL_CONTROL__DCP_GSL_DELAY_SURFACE_UPDATE_PENDING), 0);
 
-		CRTC_REG_SET_2(
-			CRTC0_CRTC_GSL_CONTROL,
+	CRTC_REG_SET_2(CRTC0_CRTC_GSL_CONTROL,
 		       CRTC_GSL_CHECK_LINE_NUM, 0,
 		       CRTC_GSL_FORCE_DELAY, 0x2); /*TODO Why this value here ?*/
 }