mfd: cros_ec: Update module description

The module description can be backtracked to commit e7c256fb
("platform/chrome: Add Chrome OS EC userspace device interface").

The description became out-of-date after a bunch of changes e.g:

- commit 5668bfdd ("platform/chrome: cros_ec_dev - Register cros-ec sensors").
- commit ea01a31b ("cros_ec: Split cros_ec_devs module").
- commit 5e011558 ("cros_ec: Move cros_ec_dev module to drivers/mfd").

Update the description.
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20240822121539.4265-1-tzungbi@kernel.orgSigned-off-by: Lee Jones <lee@kernel.org>

drivers/mfd/cros_ec_dev.c

 // SPDX-License-Identifier: GPL-2.0-or-later
 /*
- * cros_ec_dev - expose the Chrome OS Embedded Controller to user-space
+ * ChromeOS Embedded Controller
  *
  * Copyright (C) 2014 Google, Inc.
  */
@@ -377,6 +377,6 @@ module_init(cros_ec_dev_init);
 module_exit(cros_ec_dev_exit);
 
 MODULE_AUTHOR("Bill Richardson <wfrichar@chromium.org>");
-MODULE_DESCRIPTION("Userspace interface to the Chrome OS Embedded Controller");
+MODULE_DESCRIPTION("ChromeOS Embedded Controller");
 MODULE_VERSION("1.0");
 MODULE_LICENSE("GPL");