usb: lpc32xx: add host USB driver

Incorporate USB driver from legacy LPCLinux NXP BSP.
The files taken from the legacy patch are:
- lpc32xx USB driver
- lpc3250 header file USB registers definition.

The legacy driver was updated and clean-up as part of the integration with the latest u-boot.

Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
Acked-by: Marek Vasut <marex@denx.de>
Tested-by: Vladimir Zapolskiy <vz@mleia.com>
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 6cc3bbd..7f07d77 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -20,6 +20,7 @@
 obj-$(CONFIG_USB_OHCI_S3C24XX) += ohci-s3c24xx.o
 obj-$(CONFIG_USB_OHCI_EP93XX) += ohci-ep93xx.o
 obj-$(CONFIG_USB_OHCI_SUNXI) += ohci-sunxi.o
+obj-$(CONFIG_USB_OHCI_LPC32XX) += ohci-lpc32xx.o
 
 # echi
 obj-$(CONFIG_USB_EHCI) += ehci-hcd.o