iommu/omap: Fix build error with !IOMMU_SUPPORT

Without this patch it is possible to select the VIDEO_OMAP3
driver which then selects OMAP_IOVMM. But the omap iommu
driver is not compiled without IOMMU_SUPPORT enabled. Fix
that by forcing OMAP_IOMMU and OMAP_IOVMM are enabled before
VIDEO_OMAP3 can be selected.

Cc: Ohad Ben-Cohen <ohad@wizery.com>
Cc: iommu@lists.linux-foundation.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

drivers/iommu/Kconfig

@@ -114,8 +114,8 @@ config OMAP_IOMMU
 	select IOMMU_API
 
 config OMAP_IOVMM
-	tristate
-	select OMAP_IOMMU
+	tristate "OMAP IO Virtual Memory Manager Support"
+	depends on OMAP_IOMMU
 
 config OMAP_IOMMU_DEBUG
        tristate "Export OMAP IOMMU/IOVMM internals in DebugFS"

drivers/media/video/Kconfig

@@ -763,8 +763,7 @@ source "drivers/media/video/m5mols/Kconfig"
 
 config VIDEO_OMAP3
 	tristate "OMAP 3 Camera support (EXPERIMENTAL)"
-	select OMAP_IOVMM
-	depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API && ARCH_OMAP3 && EXPERIMENTAL
+	depends on OMAP_IOVMM && VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API && ARCH_OMAP3 && EXPERIMENTAL
 	---help---
 	  Driver for an OMAP 3 camera controller.