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>
diff --git a/arch/arm/mach-omap2/board-cm-t35.c b/arch/arm/mach-omap2/board-cm-t35.c
index 4af5cf9..948161d 100644
--- a/arch/arm/mach-omap2/board-cm-t35.c
+++ b/arch/arm/mach-omap2/board-cm-t35.c
@@ -541,19 +541,9 @@
 	.vpll2		= &cm_t35_vpll2,
 };
 
-static struct i2c_board_info __initdata cm_t35_i2c_boardinfo[] = {
-	{
-		I2C_BOARD_INFO("tps65930", 0x48),
-		.flags		= I2C_CLIENT_WAKE,
-		.irq		= INT_34XX_SYS_NIRQ,
-		.platform_data	= &cm_t35_twldata,
-	},
-};
-
 static void __init cm_t35_init_i2c(void)
 {
-	omap_register_i2c_bus(1, 2600, cm_t35_i2c_boardinfo,
-			      ARRAY_SIZE(cm_t35_i2c_boardinfo));
+	omap3_pmic_init("tps65930", &cm_t35_twldata);
 }
 
 static void __init cm_t35_init_early(void)