input: touchscreen: Add threaded irq support to Goodix driver

Add threaded irq support to Goodix touchscreen driver to reduce
the time spent with interrupts diabled to a bare minimum by
pushing the processing out into the kernel thread.

CRs-fixed: 563900
Change-Id: I3ade13181957d327ad9d0266b1999a4b0f2d8d1a
Signed-off-by: Shantanu Jain <shjain@codeaurora.org>