arm: omap2: usb: rename usb-ehci.c to usb-host.c

We already have both EHCI and OHCI there, so let's
rename to be sure everybody will understand the entire
USB HOST functionality is setup on this file.

Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 1c0c2b0..64dc417 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -229,7 +229,7 @@
 obj-y					+= $(usbfs-m) $(usbfs-y)
 obj-y					+= usb-musb.o
 obj-$(CONFIG_MACH_OMAP2_TUSB6010)	+= usb-tusb6010.o
-obj-y					+= usb-ehci.o
+obj-y					+= usb-host.o
 
 onenand-$(CONFIG_MTD_ONENAND_OMAP2)	:= gpmc-onenand.o
 obj-y					+= $(onenand-m) $(onenand-y)