pmic: Add support for mc34704

Add the register layout for the MC34704 PMIC from Freescale.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
diff --git a/drivers/misc/pmic_fsl.c b/drivers/misc/pmic_fsl.c
index 9d80b55..c8d4c8d 100644
--- a/drivers/misc/pmic_fsl.c
+++ b/drivers/misc/pmic_fsl.c
@@ -28,6 +28,8 @@
 
 #if defined(CONFIG_PMIC_FSL_MC13892)
 #define FSL_PMIC_I2C_LENGTH	3
+#elif defined(CONFIG_PMIC_FSL_MC34704)
+#define FSL_PMIC_I2C_LENGTH	1
 #endif
 
 #if defined(CONFIG_PMIC_SPI)