thermal: qpnp-adc-tm: Update High/Low ISR work functions

Update logic for high and low work queue functions
such that all clients can receive notifications for both
adc_tm and adc_tm_hc peripherals.

Change-Id: I2d41955d8779992913c1234c83876e3d5725af26
Signed-off-by: Rama Krishna Phani A <rphani@codeaurora.org>