The purpose of this commit is to separate the XTOS-specifc
code from the Zephyr-specifc code found in sof/sof.h.
Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
Code can now include <rtos/timer.h> and uses native Zephyr timer API
for most uses. Some wrapping still exists which can be removed over
time.
Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>