linux-firmware: add firmware v3.25.0.0 for ITEtech IT9135 DVB-T USB driver

Add two firmware files for ITEtech IT9135 Ax and Bx chip versions.
Signed-off-by: Bimow Chen <Bimow.Chen@ite.com.tw>

LICENCE.it913x

+Copyright (c) 2014, ITE Tech. Inc.
+
+The firmware files "dvb-usb-it9135-01.fw" and "dvb-usb-it9135-02.fw"
+are for ITEtech it9135 Ax and Bx chip versions.
+
+Permission to use, copy, modify, and/or distribute this software for
+any purpose with or without fee is hereby granted, provided that the
+above copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE
+FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
+DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.

WHENCE

@@ -2521,3 +2521,14 @@ File: as102_data1_st.hex
 File: as102_data2_st.hex
 
 License: Redistributable. See LICENCE.Abilis for details
+
+--------------------------------------------------------------------------
+
+Driver: it9135 -- ITEtech IT913x DVB-T USB driver
+
+File: dvb-usb-it9135-01.fw
+File: dvb-usb-it9135-02.fw
+
+Licence: Redistributable. See LICENCE.it913x for details
+
+--------------------------------------------------------------------------