input: touchscreen: Add dynamic detection support to Goodix driver

Add dynamic detection support to goodix driver, where
the driver tries to read the chip id and make sure
it is communicating with the right chip.

gtp_read_version is modified to gtp_read_fw_version
which reads the firmware version from the controller
and will be used during fw update process.

CRs-fixed: 538818
Change-Id: I2dc51b84f817413da6bf9b266e2fe7e0bb09c4bc
Signed-off-by: Shantanu Jain <shjain@codeaurora.org>