s5p-mfc: Add s5p-mfc-v6-v2 firmware

This is the newer version of mfc-v6 firmware which can
be used in exynos5250 based boards. This has many bug fixes
and enhancements. To maintain backward compatibility, the older
firmware file is still retained and the new file is added with
the name s5p-mfc-v6-v2.fw. This new firmware handling is supported
with the below patches in s5p-mfc driver:
s5p-mfc: Support multiple firmware sub-versions
s5p-mfc: Add init buffer cmd to MFCV6
Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

WHENCE

@@ -2252,11 +2252,12 @@ Driver: s5p-mfc - Samsung MFC video encoder/decoder driver
 
 File: s5p-mfc/s5p-mfc.fw
 File: s5p-mfc/s5p-mfc-v6.fw
+File: s5p-mfc/s5p-mfc-v6-v2.fw
 
 Licence:
-Samsung grants permission to use and redistribute these firmware
-files for use with Exynos series devices, but not as part of the Linux
-kernel or in any other form which would require these files themselves
+Samsung grants permission to use and redistribute aforementioned firmware
+files for the use with Exynos series devices, but not as part of the Linux
+kernel, or in any other form which would require these files themselves
 to be covered by the terms of the GNU General Public License.
 
 These firmware files are distributed in the hope that they will be