rtlwifi: Add new firmware files for rtl8192cu

The vendor driver rtl8188C_8192C_8192D_usb_linux_v3.4.2_3727.20120404
includes new firmware files. These were extracted from data statements
in that driver to form these files.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

WHENCE

@@ -1858,6 +1858,9 @@ Licence: Redistributable. See LICENCE.rtlwifi_firmware.txt for details.
 Driver: rtl8192cu - Realtek 802.11n WLAN driver for RTL8192CU
 
 File: rtlwifi/rtl8192cufw.bin
+FILE: rtlwifi/rtl8192cufw_A.bin
+FILE: rtlwifi/rtl8192cufw_B.bin
+FILE: rtlwifi/rtl8192cufw_TMSC.bin
 
 Licence: Redistributable. See LICENCE.rtlwifi_firmware.txt for details.