posix: fix posix clock undefined type

When built with the minimal libc while using POSIX clocks, Zephyr
compilation breaks with "error: unknown type name 'clockid_t'." Use
int instead of clockid_t to eliminate the dependency.

Suggested-by: Chris Friedt <cfriedt@tenstorrent.com>
Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>

Author: lyakh

lib/posix/options/posix_clock.h

@@ -9,13 +9,11 @@
 #define ZEPHYR_LIB_POSIX_POSIX_CLOCK_H_
 
 #include <stdbool.h>
-#include <stddef.h>
 #include <stdint.h>
 #include <time.h>
 
-#include <zephyr/sys_clock.h>
-#include <zephyr/sys/__assert.h>
 #include <zephyr/posix/sys/time.h>
+#include <zephyr/sys/clock.h>
 #include <zephyr/sys/timeutil.h>
 
 #ifdef __cplusplus
@@ -59,7 +57,7 @@ static inline bool tp_diff_in_range_ns(const struct timespec *a, const struct ti
 	return diff >= lo && diff < hi;
 }
 
-uint32_t timespec_to_timeoutms(clockid_t clock_id, const struct timespec *abstime);
+uint32_t timespec_to_timeoutms(int clock_id, const struct timespec *abstime);
 
 /** INTERNAL_HIDDEN @endcond */
 

lib/posix/options/timespec_to_timeout.c

@@ -8,15 +8,16 @@
 
 #include <limits.h>
 #include <stdint.h>
+#include <time.h>
 
-#include <zephyr/posix/time.h>
+#include <zephyr/sys/clock.h>
 #include <zephyr/sys/util.h>
 
-uint32_t timespec_to_timeoutms(clockid_t clock_id, const struct timespec *abstime)
+uint32_t timespec_to_timeoutms(int clock_id, const struct timespec *abstime)
 {
 	struct timespec curtime;
 
-	if (clock_gettime(clock_id, &curtime) < 0) {
+	if (sys_clock_gettime(clock_id, &curtime) < 0) {
 		return 0;
 	}