Use the newly added sys_clock API in lib/os for
* clock_gettime()
* clock_settime()
* clock_nanosleep() and nanosleep()
* gettimeofday()
Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>
Implement the POSIX_CLOCK_SELECTION Option Group.
This was mostly already done, but compiled / linked in the wrong places.
E.g. pthread_condattr_getclock() and pthread_condattr_setclock() were
in pthread.c and part of POSIX_THREADS_BASE. clock_nanosleep() was in
clock.c and part of POSIX_TIMERS.
This change builds them as part of clock_selection.c with
CONFIG_POSIX_CLOCK_SELECTION.
Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>
