xc5000: Add firmware for xc5000c variant

Newer devices use xc5000c, and require a different firmware.
Add firmware file for for it. The licensing company is different,
because Xceive was bougth by Cresta. So, while the license terms
are the same, the Copyright owner is different.
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

LICENCE.xc5000c

+The following XC500C firmware file "dvb-fe-xc5000C-4.1.30.7.fw" was created
+based on "Xc5200_firmwares_32000Khz.h".
+
+Firmware provided as part of an XC5000C Linux developers kit by Ramon Cazares
+<Ramon.Cazares@CrestaTech.com> to Devin Heitmueller dheitmueller@linuxtv.org
+on July 25, 2012.
+
+The code was released by Cresta Technology under the following license:
+
+// Copyright (c) 2012, Cresta Technology Corporation <info@crestatech.com>
+//
+// Permission to use, copy, modify, and/or distribute this software, only
+// for use with Cresta Technlogy ICs, for any purpose with or without fee is
+// hereby granted, provided that the above copyright notice and this
+// permission notice appear in all source code 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

@@ -1323,7 +1323,10 @@ Driver: xc5000 - Xceive 5000 Tuner driver
 File: dvb-fe-xc5000-1.6.114.fw
 Version: 1.6.114
 
-Licence: Redistributable. See LICENCE.xc5000 for details
+File: dvb-fe-xc5000c-4.1.30.7.fw
+Version: 4.1.30.7
+
+Licence: Redistributable. See LICENCE.xc5000 and LICENCE.xc5000c for details
 
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