kernel/802.11: Use the proper enum for ic_vap_create()'s opmode parameter.
complex.3: Use %O for URLs.
kernel/netif: Bring in the oce(4) driver for Emulex OneConnect 10Gb NICs.

According to the manual page, it supports:

* Emulex BladeEngine 2
* Emulex BladeEngine 3
* Emulex Lancer

It seems to be in solid shape, but some features remain yet unported
(such as MSI-X support). Also, the module is named 'if_oce.ko' in
DragonFly (like it is with all other network drivers) instead of
'oce.ko' like in FreeBSD.

The driver was tested by Mihai Carabas with a BladeEngine 3 adapter.

Taken-from:         FreeBSD
Additional-clue-by: sephe
oce.4: Add ifmedia(4) reference.
libc/getdevpath: Remove unneeded strlen().
kernel/oce: Fix wrong maxsegs argument for bus_dmamap_load_mbuf_segment().

Mindlessly introduced by me after it was tested by Mihai and led to a
panic.

I had misunderstood a comment by sephe. OCE_MAX_TX_ELEMENTS is (as the
name implies) just for the tx path.

Reported-by: Mihai Carabas <mihai.carabas@gmail.com>
vkernel - Fix frustrating VKE mac address bug

* Fix a very frustrating bug where VKE would sometimes ignore packets.
  It turns out that the default randomly-generated ether mac address
  was not being properly zero'd, leaving uninitialized locations in
  bytes 0 and 1 which would sometimes make the MAC look like a multicast
  address.

Reported-by: Frustrated tuxilo
Merge branch 'master' into gsocdrm_alter