V4L/DVB (11065): au8522: add support for analog side of demodulator

Add support for the analog functionality in the au8522 analog/digital
demodulator

Thanks to Michael Krufky <mkrufky@linuxtv.org> and Steven Toth
<stoth@linuxtv.org> for providing sample hardware, engineering level support,
and testing.

Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
[mchehab: renamed drivers/media/video/au8522_decoder.c as drivers/media/dvb/frontends/au8522_decoder.c to avoid breaking bisect]
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/include/linux/i2c-id.h b/include/linux/i2c-id.h
index 1ffc23b..17d9af0 100644
--- a/include/linux/i2c-id.h
+++ b/include/linux/i2c-id.h
@@ -71,6 +71,7 @@
 #define I2C_DRIVERID_VP27SMPX	93	/* Panasonic VP27s tuner internal MPX */
 #define I2C_DRIVERID_M52790 	95      /* Mitsubishi M52790SP/FP AV switch */
 #define I2C_DRIVERID_CS5345	96	/* cs5345 audio processor	*/
+#define I2C_DRIVERID_AU8522	97	/* Auvitek au8522       */
 
 #define I2C_DRIVERID_OV7670 1048	/* Omnivision 7670 camera */