limits.h: Add _XOPEN_NAME_MAX and _XOPEN_PATH_MAX values

These have fixed values in the POSIX spec.

Signed-off-by: Keith Packard <[email protected]>

Author: keith-packard

newlib/libc/include/sys/syslimits.h

@@ -101,6 +101,8 @@
 
 #ifdef _XOPEN_SOURCE
 #define _XOPEN_IOV_MAX          16
+#define _XOPEN_NAME_MAX         255
+#define _XOPEN_PATH_MAX         1024
 #endif
 
 #if __MISC_VISIBLE