input: ft5x06: add secure touch support for Focaltech on 8937 QRD

8937 QRD supports Focaltech touch controller. For ft5x06_ts driver
to work with the TrustZone secure touch, all the touch interrupts must
be forwarded between the Linux Kernel and the TrustZone input driver.
Add APIs and configuration to support this.

CRs-Fixed: 974549
Change-Id: Ibf873594722c6f299eb4cacf81804cb6548824a4
Signed-off-by: Abinaya P <abinayap@codeaurora.org>