am 73536dda: am d92cc9a4: Merge change I33eb64c0 into eclair

Merge commit '73536dda20594e4b5e83396d705127a823bfa362'

* commit '73536dda20594e4b5e83396d705127a823bfa362':
  docs: add 2.1 platform notes, win usb driver notes