Merge branch 'inet_get_addr' into net-next

Serhey Popovych  says:

====================

It looks confusing to have multiple independent
routines to get internet address from it's string
representation: get_addr() and inet_get_addr().

Most complicated users of inet_get_addr() is
iplink_geneve.c and iplink_vxlan.c because they
required to handle both AF_INET and AF_INET6
for their local/remote endpoints.

On the other hand get_addr() does not provide
additional information like address type: need
to address this. to get rid of current and
possible future code duplications. Note that
this functionality is first step to make proto
independent handling of local/remote endpoints
in ip/tunnel code (there will be additional
series based on this one).

Also fix get_addr_1() and get_prefix() to make
sure it always provide correct ->family and
->bitlen.

As always comments, suggestions and criticism
are welcome.

====================

Signed-off-by: David Ahern <dsahern@gmail.com>