drm/amd/display: Simplify bool conversion

The result of 'pwr_status == 0' is Boolean, and the question mark
expression is redundant.

Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=2354
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c

@@ -1400,7 +1400,7 @@ bool dcn32_dsc_pg_status(
 		break;
 	}
 
-	return pwr_status == 0 ? true : false;
+	return pwr_status == 0;
 }
 
 void dcn32_update_dsc_pg(struct dc *dc,