input: ft5x06_ts: add support for firmware update for CTP FT6X36

The firmware image format is changed in CTP FT6436. Also vendor
id and version id are read from fw image from a different offset
as compared to previous controllers. The driver is updated to
support the new image format.

Change-Id: I465fdfa73e56e8fc4bbfdde980c558e4715d6d08
Signed-off-by: Mao Li <maol@codeaurora.org>