omap: use common initialization for PMIC i2c bus

Introduce omap_pmic_init that registers i2c bus and PMIC device on that
bus and add omap2/3/4 wrappers for common cases.

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/common-board-devices.c

@@ -20,14 +20,35 @@
  *
  */
 
+#include <linux/i2c.h>
+#include <linux/i2c/twl.h>
+
 #include <linux/gpio.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/ads7846.h>
 
+#include <plat/i2c.h>
 #include <plat/mcspi.h>
 
 #include "common-board-devices.h"
 
+static struct i2c_board_info __initdata pmic_i2c_board_info = {
+	.addr		= 0x48,
+	.flags		= I2C_CLIENT_WAKE,
+};
+
+void __init omap_pmic_init(int bus, u32 clkrate,
+			   const char *pmic_type, int pmic_irq,
+			   struct twl4030_platform_data *pmic_data)
+{
+	strncpy(pmic_i2c_board_info.type, pmic_type,
+		sizeof(pmic_i2c_board_info.type));
+	pmic_i2c_board_info.irq = pmic_irq;
+	pmic_i2c_board_info.platform_data = pmic_data;
+
+	omap_register_i2c_bus(bus, clkrate, &pmic_i2c_board_info, 1);
+}
+
 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 	.turbo_mode	= 0,
 	.single_channel	= 1,	/* 0: slave, 1: master */