V4L/DVB (5929): Add vp27smpx driver

This device is internal to the Panasonic VP27S tuner and is used to set 
the mono/stereo/bilingual setting of the tuner.

It is used by two Japanese cx23416-based cards.

Signed-off-by: Takahiro Adachi <tadachi@tadachi-net.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/include/linux/i2c-id.h b/include/linux/i2c-id.h
index b690148..4891e03 100644
--- a/include/linux/i2c-id.h
+++ b/include/linux/i2c-id.h
@@ -119,6 +119,7 @@
 #define I2C_DRIVERID_WM8750	90	/* Wolfson WM8750 audio codec */
 #define I2C_DRIVERID_WM8753	91	/* Wolfson WM8753 audio codec */
 #define I2C_DRIVERID_LM4857 	92 	/* LM4857 Audio Amplifier */
+#define I2C_DRIVERID_VP27SMPX	93	/* Panasonic VP27s tuner internal MPX */
 
 #define I2C_DRIVERID_I2CDEV	900
 #define I2C_DRIVERID_ARP        902    /* SMBus ARP Client              */