leds: lp5562: make several arrays static const

Don't populate the arrays on the stack, instead make them static const.
Makes the object code smaller by over 150 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
   7725	   2448	     64	  10237	   27fd	drivers/leds/leds-lp5562.o

After:
   text	   data	    bss	    dec	    hex	filename
   7184	   2832	     64	  10080	   2760	drivers/leds/leds-lp5562.o
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NJacek Anaszewski <jacek.anaszewski@gmail.com>

drivers/leds/leds-lp5562.c

@@ -116,7 +116,7 @@ static inline void lp5562_wait_enable_done(void)
 
 static void lp5562_set_led_current(struct lp55xx_led *led, u8 led_current)
 {
-	u8 addr[] = {
+	static const u8 addr[] = {
 		LP5562_REG_R_CURRENT,
 		LP5562_REG_G_CURRENT,
 		LP5562_REG_B_CURRENT,
@@ -130,13 +130,13 @@ static void lp5562_set_led_current(struct lp55xx_led *led, u8 led_current)
 static void lp5562_load_engine(struct lp55xx_chip *chip)
 {
 	enum lp55xx_engine_index idx = chip->engine_idx;
-	u8 mask[] = {
+	static const u8 mask[] = {
 		[LP55XX_ENGINE_1] = LP5562_MODE_ENG1_M,
 		[LP55XX_ENGINE_2] = LP5562_MODE_ENG2_M,
 		[LP55XX_ENGINE_3] = LP5562_MODE_ENG3_M,
 	};
 
-	u8 val[] = {
+	static const u8 val[] = {
 		[LP55XX_ENGINE_1] = LP5562_LOAD_ENG1,
 		[LP55XX_ENGINE_2] = LP5562_LOAD_ENG2,
 		[LP55XX_ENGINE_3] = LP5562_LOAD_ENG3,
@@ -211,7 +211,7 @@ static int lp5562_update_firmware(struct lp55xx_chip *chip,
 {
 	enum lp55xx_engine_index idx = chip->engine_idx;
 	u8 pattern[LP5562_PROGRAM_LENGTH] = {0};
-	u8 addr[] = {
+	static const u8 addr[] = {
 		[LP55XX_ENGINE_1] = LP5562_REG_PROG_MEM_ENG1,
 		[LP55XX_ENGINE_2] = LP5562_REG_PROG_MEM_ENG2,
 		[LP55XX_ENGINE_3] = LP5562_REG_PROG_MEM_ENG3,
@@ -314,7 +314,7 @@ static int lp5562_post_init_device(struct lp55xx_chip *chip)
 static int lp5562_led_brightness(struct lp55xx_led *led)
 {
 	struct lp55xx_chip *chip = led->chip;
-	u8 addr[] = {
+	static const u8 addr[] = {
 		LP5562_REG_R_PWM,
 		LP5562_REG_G_PWM,
 		LP5562_REG_B_PWM,