wimax/i2400m: add v1.4 of the i2400m firmware

This matches the 1.4.x release of the user space code done in
http://linuxwimax.org/Download.

The driver slated for 2.6.29 works with both 1.3 and 1.4 versions of
the firmware.

Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>

WHENCE

@@ -469,9 +469,10 @@ Found in hex form in kernel source, with the following notice:
 
 --------------------------------------------------------------------------
 
-Driver: i2400m-usb - Intel 2400 Wireless WiMAX Connection over USb
+Driver: i2400m-usb - Intel 2400 Wireless WiMAX Connection over USB
 
 File: i2400m-fw-usb-1.3.sbcf
+File: i2400m-fw-usb-1.4.sbcf
 
 License: Redistributable. See LICENCE.i2400m for details