V4L/DVB (6156): Added the I2C_FUNC_I2C support to the cx23885 i2c algo definition

This is required to support the cx258xx family of audio and video decoders.

Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>