linux-user: Add sockopts for IPv6 ping and IPv6 traceroute

linux-user: Add sockopts for IPv6 ping and IPv6 traceroute

Add the neccessary sockopts for ping and traceroute on IPv6.

This fixes the following qemu warnings with IPv6:
Unsupported ancillary data: 0/2
Unsupported ancillary data: 0/11
Unsupported ancillary data: 41/25
Unsupported setsockopt level=0 optname=12
Unsupported setsockopt level=41 optname=16
Unsupported setsockopt level=41 optname=25
Unsupported setsockopt level=41 optname=50
Unsupported setsockopt level=41 optname=51
Unsupported setsockopt level=41 optname=8
Unsupported setsockopt level=58 optname=1

Tested with hppa-linux-user (big-endian) on x86_64 (little-endian).

Signed-off-by: Helge Deller <[email protected]>
Reviewed-by: Laurent Vivier <[email protected]>
Tested-by: Philippe Mathieu-Daudé <[email protected]>
Message-Id: <20170218223130[email protected]>
Signed-off-by: Laurent Vivier <[email protected]>