drm/amd/display: Replace inline NUM_ELEMENTS macro with ARRAY_SIZE

Replaces the use of local NUM_ELEMENTS macro with the ARRAY_SIZE macro
defined in <linux/array_size.h>.

This aligns with existing coccinelle script array_size.cocci which has
been applied to other sources in order to remove inline
sizeof(a)/sizeof(a[0]) patterns from other source files.

Suggested-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Linus Probert <linus.probert@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: LiquidityC

drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c

@@ -23,6 +23,8 @@
  *
  */
 
+#include <linux/array_size.h>
+
 #include "dm_services.h"
 #include "core_types.h"
 #include "timing_generator.h"
@@ -40,7 +42,6 @@
 #include "dcn10/dcn10_hubbub.h"
 #include "dce/dmub_hw_lock_mgr.h"
 
-#define NUM_ELEMENTS(a) (sizeof(a) / sizeof((a)[0]))
 #define MAX_NUM_MCACHE 8
 
 /* used as index in array of black_color_format */
@@ -230,7 +231,7 @@ const uint16_t *find_color_matrix(enum dc_color_space color_space,
 	int i;
 	enum dc_color_space_type type;
 	const uint16_t *val = NULL;
-	int arr_size = NUM_ELEMENTS(output_csc_matrix);
+	int arr_size = ARRAY_SIZE(output_csc_matrix);
 
 	type = get_color_space_type(color_space);
 	for (i = 0; i < arr_size; i++)

drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c

@@ -23,6 +23,8 @@
  *
  */
 
+#include <linux/array_size.h>
+
 #include "dm_services.h"
 
 
@@ -57,8 +59,6 @@
 #define CALC_PLL_CLK_SRC_ERR_TOLERANCE 1
 #define MAX_PLL_CALC_ERROR 0xFFFFFFFF
 
-#define NUM_ELEMENTS(a) (sizeof(a) / sizeof((a)[0]))
-
 static const struct spread_spectrum_data *get_ss_data_entry(
 		struct dce110_clk_src *clk_src,
 		enum signal_type signal,
@@ -1271,7 +1271,7 @@ const struct pixel_rate_range_table_entry *look_up_in_video_optimized_rate_tlb(
 {
 	int i;
 
-	for (i = 0; i < NUM_ELEMENTS(video_optimized_pixel_rates); i++) {
+	for (i = 0; i < ARRAY_SIZE(video_optimized_pixel_rates); i++) {
 		const struct pixel_rate_range_table_entry *e = &video_optimized_pixel_rates[i];
 
 		if (e->range_min_khz <= pixel_rate_khz && pixel_rate_khz <= e->range_max_khz) {