Update FILENAME_MAX Android constant

Author: gnzlbg

src/unix/notbsd/android/mod.rs

@@ -582,7 +582,7 @@ pub const EFD_CLOEXEC: ::c_int = 0x80000;
 pub const USER_PROCESS: ::c_short = 7;
 
 pub const BUFSIZ: ::c_uint = 1024;
-pub const FILENAME_MAX: ::c_uint = 1024;
+pub const FILENAME_MAX: ::c_uint = 4096;
 pub const FOPEN_MAX: ::c_uint = 20;
 pub const POSIX_FADV_DONTNEED: ::c_int = 4;
 pub const POSIX_FADV_NOREUSE: ::c_int = 5;