Moved `LOG_NFEATURES` from notbsd to Linux

This is because Android bionic doesn't support `LOG_NFEATURES`.

src/unix/notbsd/linux/mod.rs

@@ -446,6 +446,8 @@ pub const NCCS: usize = 32;
 
 pub const AF_NETLINK: ::c_int = 16;
 
+pub const LOG_NFACILITIES: ::c_int = 24;
+
 f! {
     pub fn CPU_ZERO(cpuset: &mut cpu_set_t) -> () {
         for slot in cpuset.bits.iter_mut() {

src/unix/notbsd/mod.rs

@@ -648,7 +648,6 @@ pub const AT_SYMLINK_NOFOLLOW: ::c_int = 0x100;
 pub const LOG_CRON: ::c_int = 9 << 3;
 pub const LOG_AUTHPRIV: ::c_int = 10 << 3;
 pub const LOG_FTP: ::c_int = 11 << 3;
-pub const LOG_NFACILITIES: ::c_int = 24;
 pub const LOG_PERROR: ::c_int = 0x20;
 
 f! {