usb: host: Move CONFIG_XHCI_FSL to Kconfig

use Kconfig to select xhci accordingly.

Signed-off-by: Ran Wang <ran.wang_1@nxp.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index f5f19ed..5264475 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -71,6 +71,12 @@
 	  Select the DRA7XX xHCI USB index.
 	  Current supported values: 0, 1.
 
+config USB_XHCI_FSL
+	bool "Support for NXP Layerscape on-chip xHCI USB controller"
+	default y if ARCH_LS1021A || FSL_LSCH3 || FSL_LSCH2
+	depends on !SPL_NO_USB
+	help
+	  Enables support for the on-chip xHCI controller on NXP Layerscape SoCs.
 endif # USB_XHCI_HCD
 
 config USB_EHCI_HCD