xfsprogs: fix compilation with uClibc-ng

MAP_SHARED_VALIDATE is completely missing.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

utils/xfsprogs/patches/140-mman.patch

@@ -1,12 +1,16 @@
 --- a/io/mmap.c
 +++ b/io/mmap.c
-@@ -11,6 +11,10 @@
+@@ -11,6 +11,14 @@
  #include "init.h"
  #include "io.h"
  
 +#ifndef MAP_SYNC
 +#define MAP_SYNC 0
 +#endif
++
++#ifndef MAP_SHARED_VALIDATE
++#define MAP_SHARED_VALIDATE 0x03
++#endif
 +
  static cmdinfo_t mmap_cmd;
  static cmdinfo_t mread_cmd;