This is the reference driver source code for Pixart OTS PAT9125.

Change-Id: Ie366894e9e89707fa2950a7ffbfe4e93059a19a3
Signed-off-by: Lawrence Liao <lawrence_liao@pixart.com>
(cherry picked from commit dfc4349a8aa02bb0b7b0639ad5368a5c85f6520f)
Git-commit: dfc4349a8aa02bb0b7b0639ad5368a5c85f6520f
Git-repo: https://github.com/PixartOpen/pixart-sensor-db810-linux-driver


[shjain@codeaurora.org: removed below listed files from original
commit as they are not needed and to resolve trivial merge conflicts:
1. arch/arm/boot/dts/qcom/apq8094-dragonboard.dtsi
2. arch/arm/boot/dts/qcom/msm8994-pinctrl.dtsi
3. arch/arm/boot/dts/qcom/msm8994.dtsi
4. drivers/input/misc/Makefile
5. drivers/input/misc/ots_pat9125/Makefile
Remove the unused pieces of algorithm from the reference
driver of Pixart PAT9125 Rotating side button.]
Signed-off-by: Shantanu Jain <shjain@codeaurora.org>