Move the SEAL constants to freebsd12 module

Author: nagisa

libc-test/build.rs

@@ -1769,7 +1769,7 @@ fn test_freebsd(target: &str) {
             | "F_SEAL_SHRINK"
             | "F_SEAL_GROW"
             | "F_SEAL_WRITE"
-                if Some(12) == freebsd_ver =>
+                if Some(12) <= freebsd_ver =>
             {
                 true
             }

src/unix/bsd/freebsdlike/freebsd/freebsd12/mod.rs

@@ -190,6 +190,13 @@ cfg_if! {
     }
 }
 
+pub const F_ADD_SEALS: ::c_int = 19;
+pub const F_GET_SEALS: ::c_int = 20;
+pub const F_SEAL_SEAL: ::c_int = 0x0001;
+pub const F_SEAL_SHRINK: ::c_int = 0x0002;
+pub const F_SEAL_GROW: ::c_int = 0x0004;
+pub const F_SEAL_WRITE: ::c_int = 0x0008;
+
 cfg_if! {
     if #[cfg(not(freebsd13))] {
         pub const ELAST: ::c_int = 96;

src/unix/bsd/freebsdlike/freebsd/mod.rs

@@ -1162,14 +1162,6 @@ pub const F_SETLK_REMOTE: ::c_int = 14;
 pub const F_READAHEAD: ::c_int = 15;
 pub const F_RDAHEAD: ::c_int = 16;
 pub const F_DUP2FD_CLOEXEC: ::c_int = 18;
-pub const F_ADD_SEALS: ::c_int = 19;
-pub const F_GET_SEALS: ::c_int = 20;
-
-pub const F_SEAL_SEAL: ::c_int = 0x0001;
-pub const F_SEAL_SHRINK: ::c_int = 0x0002;
-pub const F_SEAL_GROW: ::c_int = 0x0004;
-pub const F_SEAL_WRITE: ::c_int = 0x0008;
-
 
 fn _ALIGN(p: usize) -> usize {
     (p + _ALIGNBYTES) & !_ALIGNBYTES