mfd: cros_ec: Detect in-progress commands
mfd: cros_ec: Detect in-progress commands

Some commands take a while to execute. Use -EAGAIN to signal this to the
caller.

Signed-off-by: Simon Glass <c00b0378376498bd9cd974c388df8854c0131d27@chromium.org>
Signed-off-by: Doug Anderson <49983c4a76b998672954ed5edf4a62db4a336502@chromium.org>
Signed-off-by: Lee Jones <630e34333487a351a857f6b705e04d30b37c1629@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs