ARM: OMAP4: hwmod data: I2C: add flag for context restore

Restore of context is not done for OMAP4. This patch
adds the OMAP_I2C_FLAG_RESET_REGS_POSTIDLE in the OMAP4
hwmod data which activates the restore for OMAP4.
Currently the OMAP4 does not hit device off still the
driver may have support for it.

Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Paul Wamsley <paul@pwsan.com>
Reviewed-by: NKevin Hilman <khilman@ti.com>
Signed-off-by: NShubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>

arch/arm/mach-omap2/omap_hwmod_44xx_data.c

@@ -1487,7 +1487,8 @@ static struct omap_hwmod_class omap44xx_i2c_hwmod_class = {
 };
 
 static struct omap_i2c_dev_attr i2c_dev_attr = {
-	.flags	= OMAP_I2C_FLAG_BUS_SHIFT_NONE,
+	.flags	= OMAP_I2C_FLAG_BUS_SHIFT_NONE |
+			OMAP_I2C_FLAG_RESET_REGS_POSTIDLE,
 };
 
 /* i2c1 */