USB: ezusb: move ezusb.c from drivers/usb/serial to drivers/usb/misc

This patch
- moves drivers/usb/serial/ezusb.c to drivers/usb/misc/
- renamed CONFIG_USB_EZUSB to CONFIG_USB_EZUSB_FX2 to avoid build errors
- adapts Makefiles and Kconfigs switching from bool to tristate for CONFIG_USB_EZUSB_FX2

Signed-off-by: René Bürgel <rene.buergel@sohard.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/misc/Makefile b/drivers/usb/misc/Makefile
index 796ce7eb..3e99a64 100644
--- a/drivers/usb/misc/Makefile
+++ b/drivers/usb/misc/Makefile
@@ -11,6 +11,7 @@
 obj-$(CONFIG_USB_CYTHERM)		+= cytherm.o
 obj-$(CONFIG_USB_EMI26)			+= emi26.o
 obj-$(CONFIG_USB_EMI62)			+= emi62.o
+obj-$(CONFIG_USB_EZUSB_FX2)		+= ezusb.o
 obj-$(CONFIG_USB_FTDI_ELAN)		+= ftdi-elan.o
 obj-$(CONFIG_USB_IDMOUSE)		+= idmouse.o
 obj-$(CONFIG_USB_IOWARRIOR)		+= iowarrior.o