net: context: Allow binding AF_PACKET multiple times

If the system has more than one network interface, then it should
be possible to bind a AF_PACKET socket to each interface if the
network interface index is set when bind() is called. This was
not possible earlier as the code was always using default network
interface with AF_PACKET socket bind().

Fixes #23153

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>