i2c: Merge i2c_attach_client into i2c_new_device

Now that i2c_attach_client is no longer exported, it doesn't need to
be a separate function. Merge it into its only user, i2c_new_device.

Signed-off-by: Jean Delvare <[email protected]>
Cc: David Brownell <[email protected]>
1 file changed