Oleksandr Tymoshenko 651f754421 Add driver for AM33xx SoC touchscreen
Split ADC driver in two halves: ADC(analog ot digital) and
TSC(touchscreen). Touchscreen driver is fully functional
up to the point of reporting samples. This part will be added
once FreeBSD has API for touchscreen.

Tested on: Beaglebone Black + 4DCAPE-43T
Reviewed by:	loos
Differential Revision:	https://reviews.freebsd.org/D5847
2016-04-29 20:31:49 +00:00
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