tests: input: Add timers testsuite.

Signed-off-by: Cyril Hrubis <metan@ucw.cz>
tests: input: Simple test for TimeStamp.

Signed-off-by: Cyril Hrubis <metan@ucw.cz>
tests: runtest.py: Print name of tests directory.

Prints name of tests directory we are about to run testsuite from.

Signed-off-by: Cyril Hrubis <metan@ucw.cz>