input: touchscreen: st: Block resume work on PVM

While trusted touch is underway, block resume work
to flush touch FIFO since ownership of register space
is with Trusted VM. Additionally add extra regulator
vote before starting TUI.

Change-Id: I50e94400e467194b5caf615bdbd0d2f4d8630a96
Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>