LinuxKPI: 802.11: fix compat code for i386

LinuxKPI: 802.11: fix compat code for i386

Compiling another driver on i386 revealed two problems:
- ieee80211_tx_info.status.status_driver_data space needs to be
  calculated.  While a pointer is 32bit vm_paddr_t is 64 bit on i386
  so we didn't fit more than one of these in but needed more space.
- the arguments to ieee80211_txq_get_depth() are expected to
  unsigned long and not uint64_t.

No user noticable changes.

Sponsored by:	The FreeBSD Foundation
MFC after:	3 days