input: touchscreen: focaltech: Add trusted touch support

Add Trusted touch support to lahaina QRD Touchscreen
driver. This feature enables driver to operate in
trusted touch mode in trusted virtual machine(TVM).
The primary virtual machine(PVM) lends resources such
as IO memory and touch irq to TVM prior to trusted touch
is initiated and reclaims those resources back after trusted
touch usecase finishes.The resource requirements of TVM
such as clock, regulators etc are taken care by PVM.

Change-Id: I342a0a19977365ef08ea0c8fc191a2505e6e3984
Signed-off-by: Ritesh Kumar <riteshk@codeaurora.org>