Remove obsolete target dependencies across modules.
Remove 'cross' and 'unittests' targets.
Refactor some remaining target dependencies to use board include macro.
Signed-off-by: Marcin Smoczyński <smoczynski.marcin@gmail.com>
Do not waste time right before refresh of the eink
display to measure new temperature. Assume that
the measurement from early frame prepare stage is valid.
It has only to be valid for only <time of rendering the frame>,
which is less than a 1000ms.
This falls back to 4-bit per pixel for all the refresh modes.
1-bit per px would be more responsive in fast modes (DU2, A2),
but long story short: grayscale half-tones dissapears after
a few seconds due to the OS.
