twl4030: make twl4030_i2c_write_u8 prototype consistent

u-boot standard i2c register write prototype is
i2c_reg_write(u8 addr, u8 reg, u8 val)

twl4030_i2c_write_u8(u8 addr, u8 val, u8 reg)
does not provide consistency, so switch the prototype to be
consistent with rest of u-boot i2c operations:
twl4030_i2c_write_u8(u8 addr, u8 reg, u8 val)

Signed-off-by: Nishanth Menon <nm@ti.com>
diff --git a/include/twl4030.h b/include/twl4030.h
index 5aa1841..aca695d 100644
--- a/include/twl4030.h
+++ b/include/twl4030.h
@@ -638,7 +638,7 @@
  *   examples are TWL4030_PM_RECEIVER_VMMC1_DEV_GRP and
  *   TWL4030_LED_LEDEN.
  */
-static inline int twl4030_i2c_write_u8(u8 chip_no, u8 val, u8 reg)
+static inline int twl4030_i2c_write_u8(u8 chip_no, u8 reg, u8 val)
 {
 	return i2c_write(chip_no, reg, 1, &val, 1);
 }