This patch changes the return codes used by hub_port_wait_reset(),
hub_port_reset(), and hub_port_debounce() in hub.c.  I couldn't stand the
{-1=error, 0=okay, 1=disconnect} scheme; the meanings seemed arbitrary and
I constantly forgot which number stood for what status.  The revised code
uses normal negative error codes, including -ENOTCONN to indicate device
disconnected, or 0 for success.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>