Merged in david_s5/nuttx/master_kinetis_usb_fixes (pull request #634)

kinetis usb device fixes

* kinetis:usb device use correct CONFIG OTG control

* kinetis:usb device fix interrupt storm when cable is disconnected

      The DM, DP state were incorrect because the pulldowns were not
      enabled.

      Also the pending asynchronous resume interrupt needed to be
      re-armed after the suspend is in effect. This is now done in
      the isr.

Approved-by: Gregory Nutt <gnutt@nuttx.org>