libnetdaidl(_static) -> Android.bp

Also collapsed these two libraries into a single
library called 'libnetdaidl' that can be used as
static or non-static.

Bug: 37512442
Test: netd_integration_test (test cases all pass until
   BinderTest.TestVirtualTunnelInterface, which kills
   the device before and after this CL)
Change-Id: I2bcf17e71a2c05f46bd7566792fee5a7d9908ff3