usb: fsl: Add XHCI driver support

Add xhci driver support for all FSL socs

Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 310d979..6cc3bbd 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -54,6 +54,7 @@
 obj-$(CONFIG_USB_XHCI_DWC3) += xhci-dwc3.o
 obj-$(CONFIG_USB_XHCI_KEYSTONE) += xhci-keystone.o
 obj-$(CONFIG_USB_XHCI_EXYNOS) += xhci-exynos5.o
+obj-$(CONFIG_USB_XHCI_FSL) += xhci-fsl.o
 obj-$(CONFIG_USB_XHCI_OMAP) += xhci-omap.o
 obj-$(CONFIG_USB_XHCI_PCI) += xhci-pci.o
 obj-$(CONFIG_USB_XHCI_UNIPHIER) += xhci-uniphier.o