Add NAME_MAX for Linux (like)

(backport <#4888>)
(cherry picked from commit 9cbb6ff)

Author: Thomasdezeeuw

libc-test/semver/linux.txt

@@ -1751,6 +1751,7 @@ MS_SLAVE
 MS_STRICTATIME
 MS_SYNCHRONOUS
 MS_UNBINDABLE
+NAME_MAX
 NDA_CACHEINFO
 NDA_DST
 NDA_IFINDEX

src/unix/linux_like/mod.rs

@@ -1001,6 +1001,7 @@ pub const LOCK_UN: c_int = 8;
 pub const SS_ONSTACK: c_int = 1;
 pub const SS_DISABLE: c_int = 2;
 
+pub const NAME_MAX: c_int = 255;
 pub const PATH_MAX: c_int = 4096;
 
 pub const UIO_MAXIOV: c_int = 1024;