Define SO_BINDTOIFINDEX on Android

Android supports SO_BINDTOIFINDEX since SDK level 31:
https://cs.android.com/android/platform/superproject/main/+/main:prebuilts/vndk/v31/arm/include/bionic/libc/kernel/uapi/asm-generic/socket.h;l=88;drc=684b16d3ce1e891ebe15d5678e12fa05ee6dd6e4

Author: ningyuan-wang

libc-test/semver/android.txt

@@ -2446,6 +2446,7 @@ SOL_X25
 SOMAXCONN
 SO_ACCEPTCONN
 SO_BINDTODEVICE
+SO_BINDTOIFINDEX
 SO_BROADCAST
 SO_BSDCOMPAT
 SO_BUSY_POLL

src/unix/linux_like/android/mod.rs

@@ -1513,6 +1513,7 @@ pub const SO_PEEK_OFF: c_int = 42;
 pub const SO_BUSY_POLL: c_int = 46;
 pub const SCM_TIMESTAMPING_OPT_STATS: c_int = 54;
 pub const SCM_TIMESTAMPING_PKTINFO: c_int = 58;
+pub const SO_BINDTOIFINDEX: c_int = 62;
 pub const SO_TIMESTAMP_NEW: c_int = 63;
 pub const SO_TIMESTAMPNS_NEW: c_int = 64;
 pub const SO_TIMESTAMPING_NEW: c_int = 65;