(3/5) Stop using i2c_client.id in misc drivers.

Affected drivers:
* acorn/char/pcf8583
* acorn/char/i2c
* i2c/i2c-dev
* macintosh/therm_windtunnel
* sound/oss/dmasound/dac3550a
* sound/ppc/keywest

The Acorn pcf8583 driver would give the i2c_client id the same value as
the i2c_driver id, and later test that client id (in i2c). I changed it
to test the client's driver id instead. The result is the same and the
client id is then useless and can be removed.

All other drivers here would allocate the client id to some value and
then never use it. They are unaffected by the change.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>