da8xx/hawkboard: Add support for ohci host controller

Also enable the ohci port on hawkboard. These additions result in an
increased u-boot size -- adjust the same accordingly in the board's
config.

Move the usb header for da8xx platforms under arch-davinci.

Signed-off-by: Sughosh Ganu <urwithsughosh@gmail.com>
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 6de9164..bcb4662 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -28,6 +28,7 @@
 # ohci
 COBJS-$(CONFIG_USB_OHCI_NEW) += ohci-hcd.o
 COBJS-$(CONFIG_USB_ATMEL) += ohci-at91.o
+COBJS-$(CONFIG_USB_OHCI_DA8XX) += ohci-da8xx.o
 COBJS-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o
 COBJS-$(CONFIG_USB_R8A66597_HCD) += r8a66597-hcd.o
 COBJS-$(CONFIG_USB_S3C64XX) += s3c64xx-hcd.o