thermal: qpnp-adc-tm: Update default timer selection

Update default timer for clients who want a one second recurring
measurement polling interval to Timer2. Timer1 has a lower
resolution hence switch default clients to Timer2 and update
Timer1 resolution from 1 second to 3.9milliseconds.

Change-Id: Iafb288383b6dfdc083700a674cba81f1a842cec6
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>