pinctrl: ocelot: fix gpio4 twi function

the TWI function on GPIO4 is actually a multiplexed SCL, not an original
TWI SDA or SCL. Fix it.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-ocelot.c

@@ -132,7 +132,7 @@ OCELOT_P(0,  SG0,       NONE,      NONE);
 OCELOT_P(1,  SG0,       NONE,      NONE);
 OCELOT_P(2,  SG0,       NONE,      NONE);
 OCELOT_P(3,  SG0,       NONE,      NONE);
-OCELOT_P(4,  IRQ0_IN,   IRQ0_OUT,  TWI);
+OCELOT_P(4,  IRQ0_IN,   IRQ0_OUT,  TWI_SCL_M);
 OCELOT_P(5,  IRQ1_IN,   IRQ1_OUT,  PCI_WAKE);
 OCELOT_P(6,  UART,      TWI_SCL_M, NONE);
 OCELOT_P(7,  UART,      TWI_SCL_M, NONE);