omap iommu: renamed omap3-iommu to omap-iommu

This patch includes changes to omap3-iommu.c file to make it generic
for all OMAPs. Renamed omap3-iommu.c to omap-iommu.c

[Hiroshi DOYU: Remove unnecessary "iommu-y" in Makefile]

Signed-off-by: Hari Kanigeri <h-kanigeri2@ti.com>
Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 4b9fc57..7d2cf0f 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -89,10 +89,7 @@
 obj-$(CONFIG_OMAP_MBOX_FWK)		+= mailbox_mach.o
 mailbox_mach-objs			:= mailbox.o
 
-iommu-y					+= iommu2.o
-iommu-$(CONFIG_ARCH_OMAP3)		+= omap3-iommu.o
-
-obj-$(CONFIG_OMAP_IOMMU)		+= $(iommu-y)
+obj-$(CONFIG_OMAP_IOMMU)		:= iommu2.o omap-iommu.o
 
 i2c-omap-$(CONFIG_I2C_OMAP)		:= i2c.o
 obj-y					+= $(i2c-omap-m) $(i2c-omap-y)