Convert the driver to allow its usage with the new I2C
binding way.

Please notice that this patch doesn't convert the
callers to bind to it using the new way.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>