Revert "isl29028: switch proximity status to far when psensor is disabled"

This reverts commit 0b903d7665545e723f814402358ca7b08e545016.
isl29028: revert synaptics in-call hack
synaptics_3k: remove dirty in-call hack and add better fix

Now we just don't send touchscreen data forward if screen is suspended.
This should help with accidental touch interaction during calls.