conditional compilation for musl

Author: folkertdev

src/unix/linux_like/linux/mod.rs

@@ -665,9 +665,14 @@ s! {
         pub pps: ::c_int,
         pub n_pins: ::c_int,
         pub cross_timestamping: ::c_int,
+        #[cfg(target_env = "gnu")]
         pub adjust_phase: ::c_int,
+        #[cfg(target_env = "gnu")]
         pub max_phase_adj: ::c_int,
+        #[cfg(target_env = "gnu")]
         pub rsv: [::c_int; 11],
+        #[cfg(any(target_env = "musl", target_env = "ohos"))]
+        pub rsv: [::c_int; 13],
     }
 
     pub struct ptp_extts_request {