Convert CONFIG_USB_MUSB_HCD et al to Kconfig

This converts the following to Kconfig:
   CONFIG_USB_MUSB_HCD
   CONFIG_USB_MUSB_UDC
   CONFIG_USB_DAVINCI
   CONFIG_USB_OMAP3
   CONFIG_USB_DA8XX
   CONFIG_USB_AM35X

Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index e7658b4..13e9e49 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -51,6 +51,8 @@
 
 source "drivers/usb/dwc3/Kconfig"
 
+source "drivers/usb/musb/Kconfig"
+
 source "drivers/usb/musb-new/Kconfig"
 
 source "drivers/usb/emul/Kconfig"
diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig
new file mode 100644
index 0000000..4e2be37
--- /dev/null
+++ b/drivers/usb/musb/Kconfig
@@ -0,0 +1,29 @@
+#
+# (C) Copyright 2017
+# Adam Ford, Logic PD, aford173@gmail.com
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+comment "Legacy MUSB Support"
+
+config USB_MUSB_HCD
+	bool "Legacy MUSB Host Controller"
+
+config USB_MUSB_UDC
+	bool "Legacy USB Device Controller"
+
+config USB_DAVINCI
+	bool "Legacy MUSB DaVinci"
+	
+config USB_OMAP3
+	bool "Legacy MUSB OMAP3 / OMAP4"
+	depends on ARCH_OMAP2PLUS
+
+config USB_DA8XX
+	bool "Legacy MUSB DA8xx/OMAP-L1x"
+	depends on ARCH_DAVINCI
+
+config USB_AM35X
+	bool"Legacy MUSB AM35x"
+	depends on ARCH_OMAP2PLUS && !USB_OMAP3