Add IPv6 link-local address generation from EUI-48

Add a utility method to convert an EUI-48 to an IPv6 link-local
address based on RFC 4291 (EUI-64 generation) followed by RFC 4862.

Bug: 117605977
Test: atest MacAddressTest
Merged-In: I80b683e69da6beff3b37fc345fc15aa9610d09b7
Change-Id: I80b683e69da6beff3b37fc345fc15aa9610d09b7