libc: remove obsolete CLOCK_REALTIME_HR and CLOCK_MONOTONIC_HR

Add CLOCK_MONOTONIC_RAW, CLOCK_REALTIME_COARSE, and CLOCK_MONOTONIC_COARSE
as supported by recent linux kernels.

Bug: 8895727
Change-Id: I3d415a2edbcf2928dd855e876337bf2239ac134a
1 file changed