input: touchscreen: change the focaltech firmware upgrade method

upgarde firmware on the touch controller when the new firmware
version is geater than the current firmware version. Update the
firmware version id after successful firmware update. skip
firmware update when device is in suspend state.

CRs-Fixed: 623803

This patch is propagated from msm-3.10 kernel
(commit: 0ccdce94d6f35d8ffd524ed2a82f15327cde99a8
input: touchscreen: change the focaltech firmware upgrade method)

Change-Id: Ic462f6483887a3654665852e58ae9891de9f5eff
Signed-off-by: Sarada Prasanna Garnayak <c_sgarna@codeaurora.org>
Signed-off-by: Sudhakar Manapati <smanap@codeaurora.org>