There are only a few things the recovery needs to do. Primarily, it just
needs to:
	Determine the number of bytes transferred
	Get the card back to transfer state
	Determine whether to retry

There are also a couple of additional features:
	Reset the card before the last retry
	Read one sector at a time

The legacy code spent much effort analyzing command errors, but commands
fail fast, so it is simpler just to give all command errors the same number
of retries.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Tested-by: NLinus Walleij <linus.walleij@linaro.org>