Add IFF_LOWER_UP, IFF_DORMANT, IFF_ECHO constants to Android

Author: mkpowers

src/unix/linux_like/android/mod.rs

@@ -992,6 +992,10 @@ pub const F_TEST: ::c_int = 3;
 pub const F_TLOCK: ::c_int = 2;
 pub const F_ULOCK: ::c_int = 0;
 
+pub const IFF_LOWER_UP: ::c_int = 0x10000;
+pub const IFF_DORMANT: ::c_int = 0x20000;
+pub const IFF_ECHO: ::c_int = 0x40000;
+
 pub const PTHREAD_MUTEX_NORMAL: ::c_int = 0;
 pub const PTHREAD_MUTEX_RECURSIVE: ::c_int = 1;
 pub const PTHREAD_MUTEX_ERRORCHECK: ::c_int = 2;