efikamx: Fix pmic_init() argument

On efikamx board the PMIC is connected via SPI interface, so it does not make
sense to pass I2C_PMIC into the pmic_init() interface.

Pass the SPI bus number via CONFIG_FSL_PMIC_BUS option instead.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>

board/genesi/mx51_efikamx/efikamx.c

@@ -159,7 +159,7 @@ static void power_init(void)
 	struct pmic *p;
 	int ret;
 
-	ret = pmic_init(I2C_PMIC);
+	ret = pmic_init(CONFIG_FSL_PMIC_BUS);
 	if (ret)
 		return;