[PATCH] USB: move usb-serial.h to include/linux/usb/

USB serial outside of the kernel tree can not build properly due to
usb-serial.h being buried down in the source tree.  This patch moves the
location of the file to include/linux/usb and fixes up all of the usb
serial drivers to handle the move properly.

Cc: Sergei Organov <osv@javad.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/serial/ezusb.c b/drivers/usb/serial/ezusb.c
index debc3b0..5169c2d 100644
--- a/drivers/usb/serial/ezusb.c
+++ b/drivers/usb/serial/ezusb.c
@@ -15,7 +15,7 @@
 #include <linux/tty.h>
 #include <linux/module.h>
 #include <linux/usb.h>
-#include "usb-serial.h"
+#include <linux/usb/serial.h>
 
 /* EZ-USB Control and Status Register.  Bit 0 controls 8051 reset */
 #define CPUCS_REG    0x7F92