Adjust iproute2 v4.14 to compile on android

1. Update the list of files to compile.
2. Add -Wno-int-conversion to avoid compile error.
3. #ifdef out the call to getpass, which bionic does not support.
4. #ifdef out the #warning that says that libmnl is not present,
   since android does not include it.
5. Fix a sizeof printf format specifier from %lu to %zu. This is
   not being sent upstream because upstream code has since
   changed.

Test: aosp_walleye-eng builds
Test: basic iproute operations (listing rules/routes, configuring addresses) work
Change-Id: I117dcabdf1396d1607167ed36991b2999804de47
5 files changed