drm/amd/display: Moved swizzle parameter translation to dc.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/basics/conversion.c

@@ -221,3 +221,12 @@ void calculate_adjustments_y_only(
 		adjustments->brightness);
 }
 
+unsigned int log_2(unsigned int num)
+{
+	unsigned int result = 0;
+
+	while ((num >>= 1) != 0)
+		result++;
+
+	return result;
+}

drivers/gpu/drm/amd/display/dc/basics/conversion.h

@@ -48,4 +48,6 @@ void calculate_adjustments_y_only(
 	const struct dc_csc_adjustments *adjustments,
 	struct fixed31_32 *matrix);
 
+unsigned int log_2(unsigned int num);
+
 #endif