Added clock_getcpuclockid to linux

https://man7.org/linux/man-pages/man3/clock_getcpuclockid.3.html

Author: xonatius

src/unix/linux_like/linux/mod.rs

@@ -2759,6 +2759,11 @@ extern "C" {
         sevp: *mut ::sigevent,
     ) -> ::c_int;
 
+    pub fn clock_getcpuclockid(
+        pid: ::pid_t,
+        clk_id: *mut ::clockid_t
+    ) -> ::c_int;
+
     pub fn lutimes(file: *const ::c_char, times: *const ::timeval) -> ::c_int;
 
     pub fn setpwent();