hlte: Skip redundant dtc build step

* Creating dtb is now done as a step of the inline kernel build.

Change-Id: I9f0689082f04999a45dfc2d62685dc342c781601
hlte: Turn off s-pen button while screen is off.

Change-Id: I56b26f543521026fe413a9c3815ec6da79ccbdb1
hlte: add keydisabler

Change-Id: I868ec0c90001cc969edea1d307305c95b11348ca