V4L/DVB (8168): cx18: Upgrade to newer firmware & update cx18 documentation.

Conexant graciously gave us permission to redistribute the
firmware. Update the documentation where the firmware can be
downloaded.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/Documentation/video4linux/cx18.txt b/Documentation/video4linux/cx18.txt
index ecab5a0..914cb7e 100644
--- a/Documentation/video4linux/cx18.txt
+++ b/Documentation/video4linux/cx18.txt
@@ -23,14 +23,8 @@
 
 Firmware:
 
-The firmware needs to be extracted from the Windows Hauppauge HVR-1600
-driver, available here:
+You can obtain the firmware files here:
 
-http://hauppauge.lightpath.net/software/install_cd/hauppauge_cd_3.4d1.zip
+http://dl.ivtvdriver.org/ivtv/firmware/cx18-firmware.tar.gz
 
-Unzip, then copy the following files to the firmware directory
-and rename them as follows:
-
-Drivers/Driver18/hcw18apu.rom -> v4l-cx23418-apu.fw
-Drivers/Driver18/hcw18enc.rom -> v4l-cx23418-cpu.fw
-Drivers/Driver18/hcw18mlC.rom -> v4l-cx23418-dig.fw
+Untar and copy the .fw files to your firmware directory.