ARM: omap2plus_defconfig: Enable OMAP IOMMU support

OMAP3 media platform drivers (i.e: omap3isp) needs IOMMU support so
enable it to be able to test the OMAP3 Image Signal Processor (ISP).

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/configs/omap2plus_defconfig

@@ -404,7 +404,8 @@ CONFIG_RTC_DRV_OMAP=m
 CONFIG_DMADEVICES=y
 CONFIG_TI_EDMA=y
 CONFIG_DMA_OMAP=y
-# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_IOMMU_SUPPORT=y
+CONFIG_OMAP_IOMMU=y
 CONFIG_EXTCON=m
 CONFIG_EXTCON_USB_GPIO=m
 CONFIG_EXTCON_PALMAS=m