This patch finishes the port and enables debug as an build option.
This was tested on:

Atheros AR5213A chip found (MAC: 0x59, PHY: 0x43)
RF5112A multiband radio found (0x36)

Note:

For 2 GHz band on the above card I noticed we get negative channel
numbers. Will look into this unless someone beats me to it.

Example out put when loading using:

sudo modprobe ath5k debug=0x00000400

 Band 2 GHz: channels 26, rates 12
  channels:
     1 2412 00c0 0000
     2 2417 00c0 0000
     3 2422 00c0 0000
     4 2427 00c0 0000
     5 2432 00c0 0000
     6 2437 00c0 0000
     7 2442 00c0 0000
     8 2447 00c0 0000
     9 2452 00c0 0000
    10 2457 00c0 0000
    11 2462 00c0 0000
    12 2467 00c0 0000
    13 2472 00c0 0000
    14 2484 00c0 0000
   -498 2512 00c0 0000
   -494 2532 00c0 0000
   -490 2552 00c0 0000
   -486 2572 00c0 0000
   -482 2592 00c0 0000
   -478 2612 00c0 0000
   -474 2632 00c0 0000
   -470 2652 00c0 0000
   -466 2672 00c0 0000
   -462 2692 00c0 0000
   -458 2712 00c0 0000
   -454 2732 00c0 0000
 Band 5 GHz: channels 194, rates 8
  channels:
    27 5135 0140 0000
    28 5140 0140 0000
[... etc ]
   219 6095 0140 0000
   220 6100 0140 0000
  rates:
     60 000b 0000 0000
     90 000f 0000 0000
    120 000a 0000 0000
    180 000e 0000 0000
    240 0009 0000 0000
    360 000d 0000 0000
    480 0008 0000 0000
    540 000c 0000 0000

Changes to base.c, base.h
Changes-licensed-under: 3-Clause-BSD

Changes to debug.c, debug.h
Changes-licensed-under: GPL
Signed-off-by: Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
Signed-off-by: John W. Linville <linville@tuxdriver.com>