net: Make the netconsole buffer size configurable

Allow a board to configure a larger buffer for netconsole, but leave
the default.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2 files changed