Revision 207

OLPC selftest additions:
     1.  Marvel wireless driver: selftest scans the airway and displays results.
     2.  USB serial driver: fix bug to close and return flag in selftest.
     3.  USB 2.0 hcd driver: selftest generates fisheye pattern to unoccupied ports.
     4.  /memory: selftest tests memory in .available using memory-test-suites.
     5.  /8042/keyboard: selftest turns on/off the keyboard illuminating lights.
     6.  /audio: selftest plays a sinewave, record/playback.
     7.  /sd: selftest reads/writes/restores first block if sd card is detected.
     8.  /nandflash: selftest gets and verifies id.
     9.  /spiflash: none added (don't want to turn off kbd)