mfd: cros_ec: Sync to the latest cros_ec_commands.h from EC sources

This just updates include/linux/mfd/cros_ec_commands.h to match the
latest EC version (which is the One True Source for such things).  See
<https://chromium.googlesource.com/chromiumos/platform/ec>

[dianders: took today's ToT version from the Chromium OS EC; deleted
references to cros_ec_dev and cros_ec_lpc since those aren't upstream
yet]

Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Andrew Bresticker <abrestic@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.h
index 032af7f..887ef4f 100644
--- a/include/linux/mfd/cros_ec.h
+++ b/include/linux/mfd/cros_ec.h
@@ -29,8 +29,8 @@
 	EC_MSG_RX_PROTO_BYTES	= 3,
 
 	/* Max length of messages */
-	EC_MSG_BYTES		= EC_HOST_PARAM_SIZE + EC_MSG_TX_PROTO_BYTES,
-
+	EC_MSG_BYTES		= EC_PROTO2_MAX_PARAM_SIZE +
+					EC_MSG_TX_PROTO_BYTES,
 };
 
 /**