drm/amd/display: Clean up some inconsistent indenting

No functional modification involved.

smatch warning:

drivers/gpu/drm/amd/amdgpu/../display/dc/dcn20/dcn20_dwb.c:104 dwb2_enable() warn: inconsistent indenting.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb.c

@@ -101,7 +101,7 @@ static bool dwb2_enable(struct dwbc *dwbc, struct dc_dwb_params *params)
 	struct dcn20_dwbc *dwbc20 = TO_DCN20_DWBC(dwbc);
 
 	/* Only chroma scaling (sub-sampling) is supported in DCN2 */
-if ((params->cnv_params.src_width  != params->dest_width) ||
+	if ((params->cnv_params.src_width  != params->dest_width) ||
 	    (params->cnv_params.src_height != params->dest_height)) {
 
 		DC_LOG_DWB("%s inst = %d, FAILED!LUMA SCALING NOT SUPPORTED", __func__, dwbc20->base.inst);