[media] cx231xx: prepare for i2c_client attachment
[media] cx231xx: prepare for i2c_client attachment

This is needed to support PCTV QuatroStick 522e which uses a si2157.
The si2157 driver is written using i2c_client attachment.

Signed-off-by: Matthias Schwarzott <0a9348b32be3e40b872e5f0ce1a66182f8efca86@gentoo.org>
Tested-by: Mauro Carvalho Chehab <0cae1d1e981e84d16b82ca3d17be8a7f826608d3@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <0cae1d1e981e84d16b82ca3d17be8a7f826608d3@samsung.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs