ASoC: Enable wsa881x-temp-sensor for bengal

Enable wsa881x-temp-sensor only for bengal, since
sdm450 uses both analog and digital wsa and would
cause symbolic error as wsa881x-temp-sensor would
be enabled twice.

Change-Id: Ibe78bee9a4400f5c4a355056b53d0bf726546f55
Signed-off-by: Sujin Panicker <c_spanic@qti.qualcomm.com>