mfd: Constify reg_sequence and regmap_irq

Static 'struct reg_sequence' array, 'struct regmap_irq_sub_irq_map' and
'struct regmap_irq_chip ' are not modified so can be changed to const
for more safety.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Reviewed-by: Matti Vaittinen <[e-mail]>
Reviewed-by: Charles Keepax <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Lee Jones <[e-mail]>

drivers/mfd/cs40l50-core.c

···
 		       CS40L50_GLOBAL_ERROR_MASK),
 };
 
-static struct regmap_irq_chip cs40l50_irq_chip = {
+static const struct regmap_irq_chip cs40l50_irq_chip = {
 	.name =		"cs40l50",
 	.status_base =	CS40L50_IRQ1_INT_1,
 	.mask_base =	CS40L50_IRQ1_MASK_1,

drivers/mfd/rohm-bd71828.c

···
 static unsigned int bit6_offsets[] = {1, 2};		/* DCIN IRQ */
 static unsigned int bit7_offsets[] = {0};		/* BUCK IRQ */
 
-static struct regmap_irq_sub_irq_map bd718xx_sub_irq_offsets[] = {
+static const struct regmap_irq_sub_irq_map bd718xx_sub_irq_offsets[] = {
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit0_offsets),
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit1_offsets),
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit2_offsets),

drivers/mfd/tps65219.c

···
 static unsigned int tps65214_bit5_offsets[] = { TPS65214_REG_INT_LDO_1_2_POS };
 static unsigned int tps65214_bit7_offsets[] = { TPS65214_REG_INT_PB_POS };
 
-static struct regmap_irq_sub_irq_map tps65219_sub_irq_offsets[] = {
+static const struct regmap_irq_sub_irq_map tps65219_sub_irq_offsets[] = {
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit0_offsets),
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit1_offsets),
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit2_offsets),
···
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit7_offsets),
 };
 
-static struct regmap_irq_sub_irq_map tps65215_sub_irq_offsets[] = {
+static const struct regmap_irq_sub_irq_map tps65215_sub_irq_offsets[] = {
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit0_offsets),
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit1_offsets),
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit2_offsets),

drivers/mfd/twl6040.c

···
 	{ 0x2E, 0x00 }, /* REG_STATUS	(ro) */
 };
 
-static struct reg_sequence twl6040_patch[] = {
+static const struct reg_sequence twl6040_patch[] = {
 	/*
 	 * Select I2C bus access to dual access registers
 	 * Interrupt register is cleared on read