input: synaptics: Correct bugs in fw update

- Fixed reset command could fail after firmware update
- Config reset pin if reset gpio is defined in platform data
- Force do a reset in function probe
- Skip fw/config update process if image firmware id is smaller
  than device firmware id

Change-Id: I3525410c791454f64c680506fe4c77e9da650a46
Git-commit: db1a35c603df138842bdee3b0d9e7f9e24012e4e
Git-repo: git://github.com/synaptics-touch/synaptics-dsx-i2c.git


[amaloche@codeaurora.org: modified change w.r.t current driver]
Signed-off-by: Amy Maloche <amaloche@codeaurora.org>