platform/chrome: cros_ec: let cros_ec_suspend() call cros_ec_suspend_*

After commit 2fbe479c ("platform/chrome: cros_ec: Handle events
during suspend after resume completion"), cros_ec_resume() starts to
call cros_ec_resume_early() and cros_ec_resume_complete().

To be neat, let cros_ec_suspend() call cros_ec_suspend_prepare() and
cros_ec_suspend_late().
Reviewed-by: Prashant Malani <pmalani@chromium.org>
Link: https://lore.kernel.org/r/20240430020924.610724-1-tzungbi@kernel.orgSigned-off-by: Tzung-Bi Shih <tzungbi@kernel.org>

drivers/platform/chrome/cros_ec.c

@@ -388,8 +388,8 @@ EXPORT_SYMBOL(cros_ec_suspend_late);
  */
 int cros_ec_suspend(struct cros_ec_device *ec_dev)
 {
-	cros_ec_send_suspend_event(ec_dev);
-	cros_ec_disable_irq(ec_dev);
+	cros_ec_suspend_prepare(ec_dev);
+	cros_ec_suspend_late(ec_dev);
 	return 0;
 }
 EXPORT_SYMBOL(cros_ec_suspend);