fix microblaze compile from glibc git

toolchain/glibc/patches/2.22/sysdep-include-microblaze.patch

@@ -0,0 +1,22 @@
+diff -Nur glibc-2.22.orig/sysdeps/unix/sysv/linux/microblaze/sysdep.h glibc-2.22/sysdeps/unix/sysv/linux/microblaze/sysdep.h
+--- glibc-2.22.orig/sysdeps/unix/sysv/linux/microblaze/sysdep.h	2015-08-05 08:42:21.000000000 +0200
++++ glibc-2.22/sysdeps/unix/sysv/linux/microblaze/sysdep.h	2015-08-08 10:00:04.148568537 +0200
+@@ -16,8 +16,11 @@
+    License along with the GNU C Library; if not, see
+    <http://www.gnu.org/licenses/>.  */
+ 
++#ifndef _LINUX_MICROBLAZE_SYSDEP_H
++#define _LINUX_MICROBLAZE_SYSDEP_H 1
++
++#include <sysdeps/unix/sysdep.h>
+ #include <sysdeps/microblaze/sysdep.h>
+-#include <sys/syscall.h>
+ 
+ /* Defines RTLD_PRIVATE_ERRNO.  */
+ #include <dl-sysdep.h>
+@@ -305,3 +308,5 @@
+ # define PTR_DEMANGLE(var) (void) (var)
+ 
+ #endif /* not __ASSEMBLER__ */
++
++#endif /* _LINUX_MICROBLAZE_SYSDEP_H */