[PORT FROM R2] Add keypad driver patches

[PORT FROM R2] Add keypad driver patches

BZ: 18179

This BZ includes the following BZ:
4915, 13482

Signed-off-by: Li, Ning <ning.li@intel.com>
Change-Id: Ief9354e35afa55991a0fba63f6f9edbac7778bed
Reviewed-on: http://android.intel.com:8080/29697
Reviewed-by: Li, Ning <ning.li@intel.com>
Reviewed-by: Yang, Bin <bin.yang@intel.com>
Reviewed-by: Du, Alek <alek.du@intel.com>
Tested-by: Wang, Zhifeng <zhifeng.wang@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>