iio: adc: versal-sysmon: update irq handling

commit 2802fd2cdfd02e95637686c738050888e66b1e65 from
https://github.com/Xilinx/linux-xlnx.git

 xlnx_rebase_v5.15

Update TEMP sensor irq handler to skip handling non-TEMP irq as TEMP irq.
Correct ISR bit handling for VOLTAGE sensore.
Clear all spurious interrupts on initialisation.
Mask all interrupts on initialisation.

Signed-off-by: Dragan Cvetic <dragan.cvetic@amd.com>
State: pending
Signed-off-by: Quanyang Wang <quanyang.wang@windriver.com>