MAINTAINERS: Add Prashant's maintainership of cros_ec drivers

Prashant maintains the cros_usbpd_notify driver as well as
the cros_ec_type_c driver.

Link: https://lore.kernel.org/r/20210920205402.3818320-1-bleung@chromium.orgSigned-off-by: Benson Leung <bleung@chromium.org>
Acked-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>

MAINTAINERS

@@ -4429,6 +4429,17 @@ F:	drivers/power/supply/cros_usbpd-charger.c
 N:	cros_ec
 N:	cros-ec
 
+CHROMEOS EC USB TYPE-C DRIVER
+M:	Prashant Malani <pmalani@chromium.org>
+S:	Maintained
+F:	drivers/platform/chrome/cros_ec_typec.c
+
+CHROMEOS EC USB PD NOTIFY DRIVER
+M:	Prashant Malani <pmalani@chromium.org>
+S:	Maintained
+F:	drivers/platform/chrome/cros_usbpd_notify.c
+F:	include/linux/platform_data/cros_usbpd_notify.h
+
 CHRONTEL CH7322 CEC DRIVER
 M:	Jeff Chase <jnchase@google.com>
 L:	linux-media@vger.kernel.org