Add some undocumented commands to the ts102 registers file, and fix a few
typos.
Modifications to tctrl.c:
Add entrypoints to driver for open/close/ioctl/poll.
Make device work with apmd. (still no support for suspend/sleep)
Make device work with ENVSYS API.
Slightly restructure handling of events.
Add function to make microcontroller requests.
do much yet (except for power down support). As sson as I figure
out to get its interrupts enabled, it will be much more functional.
(e.g., print console messages on low power warnings, be able to turn
off the TFT, etc.).
garbled