mfd: cros_ec: Instantiate the CrOS USB PD logger driver

Add the cros-usbpd-logger driver for logging event data for the USB PD
charger available in the Embedded Controller on ChromeOS systems. The
logging feature is logically separate functionality from charge manager,
hence is instantiated as a different driver.
Signed-off-by: NEnric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: NGuenetr Roeck <linux@roeck-us.net>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

drivers/mfd/cros_ec_dev.c

@@ -385,7 +385,8 @@ static const struct mfd_cell cros_ec_rtc_cells[] = {
 };
 
 static const struct mfd_cell cros_usbpd_charger_cells[] = {
-	{ .name = "cros-usbpd-charger" }
+	{ .name = "cros-usbpd-charger" },
+	{ .name = "cros-usbpd-logger" },
 };
 
 static const struct mfd_cell cros_ec_platform_cells[] = {