spl: common: Support for USB MSD FAT image loading

Add SPL support to be able to detect a USB Mass Storage device
connected to a USB host.  Once a USB Mass storage device is detected
the SPL will load the u-boot.img from a FAT partition to target address.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
diff --git a/spl/Makefile b/spl/Makefile
index ceb425b..4143e38 100644
--- a/spl/Makefile
+++ b/spl/Makefile
@@ -83,6 +83,8 @@
 LIBS-$(CONFIG_SPL_MUSB_NEW_SUPPORT) += drivers/usb/musb-new/
 LIBS-$(CONFIG_SPL_USBETH_SUPPORT) += drivers/usb/gadget/
 LIBS-$(CONFIG_SPL_WATCHDOG_SUPPORT) += drivers/watchdog/
+LIBS-$(CONFIG_SPL_USB_HOST_SUPPORT) += drivers/usb/host/
+LIBS-$(CONFIG_OMAP_USB_PHY) += drivers/usb/phy/
 
 ifneq (,$(CONFIG_MX23)$(CONFIG_MX35)$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35))
 LIBS-y += arch/$(ARCH)/imx-common/