kernel: move time_units into sys subdirectory
This isn't something the user will ever include directory, so take
steps to hide it.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
diff --git a/include/time_units.h b/include/sys/time_units.h
similarity index 100%
rename from include/time_units.h
rename to include/sys/time_units.h
diff --git a/include/sys_clock.h b/include/sys_clock.h
index 08d87f7..681061e 100644
--- a/include/sys_clock.h
+++ b/include/sys_clock.h
@@ -22,7 +22,7 @@
#include <toolchain.h>
#include <zephyr/types.h>
-#include <time_units.h>
+#include <sys/time_units.h>
#ifdef __cplusplus
extern "C" {
diff --git a/tests/kernel/timer/timer_api/src/timer_convert.c b/tests/kernel/timer/timer_api/src/timer_convert.c
index 8aa4c5c..6a712b7 100644
--- a/tests/kernel/timer/timer_api/src/timer_convert.c
+++ b/tests/kernel/timer/timer_api/src/timer_convert.c
@@ -5,7 +5,7 @@
*/
#include <ztest.h>
#include <zephyr/types.h>
-#include <time_units.h>
+#include <sys/time_units.h>
#define NUM_RANDOM 100
