USB: m66592-udc: peripheral controller driver for M66592

I would like to submit Renesas M66592 udc driver.

The M66592 is Renesas USB 2.0 peripheral controller.
This controller supports USB high-speed.

The driver has been tested Gadget Zero, Ethernet Gadget,
File-backed Storage Gadget, and passed usbtest script.

Signed-off-by : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index f771a7c..0576888 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -226,6 +226,24 @@
 	depends on USB_GADGET_AT91
 	default USB_GADGET
 
+config USB_GADGET_M66592
+	boolean "M66592 driver"
+	select USB_GADGET_DUALSPEED
+	help
+	   M66592 is a USB 2.0 peripheral controller.
+
+	   It has seven configurable endpoints, and endpoint zero.
+
+	   Say "y" to link the driver statically, or "m" to build a
+	   dynamically linked module called "m66592_udc" and force all
+	   gadget drivers to also be dynamically linked.
+
+config USB_M66592
+	tristate
+	depends on USB_GADGET_M66592
+	default USB_GADGET
+	select USB_GADGET_SELECTED
+
 config USB_GADGET_DUMMY_HCD
 	boolean "Dummy HCD (DEVELOPMENT)"
 	depends on (USB=y || (USB=m && USB_GADGET=m)) && EXPERIMENTAL