pinctrl: sunxi: rename R_PIO i2c pin function name

The I2C pin functions in R_PIO used to be named "s_twi".

As we usually use the name "i2c" instead of "twi" in the mainline
kernel, change these names to "s_i2c" for consistency.

The "s_twi" functions are not yet referenced by any device trees in
mainline kernel so I think it's safe to change the name.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/sunxi/pinctrl-sun6i-a31-r.c

@@ -25,12 +25,12 @@ static const struct sunxi_desc_pin sun6i_a31_r_pins[] = {
 	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 0),
 		  SUNXI_FUNCTION(0x0, "gpio_in"),
 		  SUNXI_FUNCTION(0x1, "gpio_out"),
-		  SUNXI_FUNCTION(0x2, "s_twi"),		/* SCK */
+		  SUNXI_FUNCTION(0x2, "s_i2c"),		/* SCK */
 		  SUNXI_FUNCTION(0x3, "s_p2wi")),	/* SCK */
 	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 1),
 		  SUNXI_FUNCTION(0x0, "gpio_in"),
 		  SUNXI_FUNCTION(0x1, "gpio_out"),
-		  SUNXI_FUNCTION(0x2, "s_twi"),		/* SDA */
+		  SUNXI_FUNCTION(0x2, "s_i2c"),		/* SDA */
 		  SUNXI_FUNCTION(0x3, "s_p2wi")),	/* SDA */
 	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 2),
 		  SUNXI_FUNCTION(0x0, "gpio_in"),

drivers/pinctrl/sunxi/pinctrl-sun8i-a23-r.c

@@ -29,13 +29,13 @@ static const struct sunxi_desc_pin sun8i_a23_r_pins[] = {
 		  SUNXI_FUNCTION(0x0, "gpio_in"),
 		  SUNXI_FUNCTION(0x1, "gpio_out"),
 		  SUNXI_FUNCTION(0x2, "s_rsb"),		/* SCK */
-		  SUNXI_FUNCTION(0x3, "s_twi"),		/* SCK */
+		  SUNXI_FUNCTION(0x3, "s_i2c"),		/* SCK */
 		  SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 0)),	/* PL_EINT0 */
 	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 1),
 		  SUNXI_FUNCTION(0x0, "gpio_in"),
 		  SUNXI_FUNCTION(0x1, "gpio_out"),
 		  SUNXI_FUNCTION(0x2, "s_rsb"),		/* SDA */
-		  SUNXI_FUNCTION(0x3, "s_twi"),		/* SDA */
+		  SUNXI_FUNCTION(0x3, "s_i2c"),		/* SDA */
 		  SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 1)),	/* PL_EINT1 */
 	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 2),
 		  SUNXI_FUNCTION(0x0, "gpio_in"),

drivers/pinctrl/sunxi/pinctrl-sun8i-h3-r.c

@@ -20,12 +20,12 @@ static const struct sunxi_desc_pin sun8i_h3_r_pins[] = {
 	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 0),
 		  SUNXI_FUNCTION(0x0, "gpio_in"),
 		  SUNXI_FUNCTION(0x1, "gpio_out"),
-		  SUNXI_FUNCTION(0x2, "s_twi"),         /* SCK */
+		  SUNXI_FUNCTION(0x2, "s_i2c"),         /* SCK */
 		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 0)),	/* PL_EINT0 */
 	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 1),
 		  SUNXI_FUNCTION(0x0, "gpio_in"),
 		  SUNXI_FUNCTION(0x1, "gpio_out"),
-		  SUNXI_FUNCTION(0x2, "s_twi"),         /* SDA */
+		  SUNXI_FUNCTION(0x2, "s_i2c"),         /* SDA */
 		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 1)),	/* PL_EINT1 */
 	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 2),
 		  SUNXI_FUNCTION(0x0, "gpio_in"),