input: synaptics: Add support for new firmware versions

- Add DS5 firmware update support
- Support polling mode in firmware update

Signed-off-by: Alexandra Chin <alexandra.chin@tw.synaptics.com>
Change-Id: Ibf9a6ffcd843866683b3b138af56f09545f3742c
Git-commit: e01cec21f08bc35ba3e97981b967bb4e2c52267a
Git-repo: git://github.com/synaptics-touch/msm-3.4.git


[amaloche@codeaurora.org: Changes due to base driver
differences]
Signed-off-by: Amy Maloche <amaloche@codeaurora.org>