mainboard/google/brya: Add SCI event EC_HOST_EVENT_USB_MUX

Send USB_MUX host event for the connect/disconnect type C devices.

BUG=none
BRANCH=None
TEST=manual tested USB connect/disconnect

Change-Id: I5a720e1f1ea42f200e0e4c98f42894e4b92c67f8
Signed-off-by: madhusudanarao amara <madhusudanarao.amara@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54725
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Reviewed-by: Sooraj Govindan <sooraj.govindan@intel.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/brya/variants/baseboard/include/baseboard/ec.h b/src/mainboard/google/brya/variants/baseboard/include/baseboard/ec.h
index a4b8829..d01b450 100644
--- a/src/mainboard/google/brya/variants/baseboard/include/baseboard/ec.h
+++ b/src/mainboard/google/brya/variants/baseboard/include/baseboard/ec.h
@@ -22,7 +22,8 @@
 	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_USB_CHARGER)       |\
 	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_MKBP)              |\
 	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_PD_MCU)            |\
-	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_MODE_CHANGE))
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_MODE_CHANGE)       |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_USB_MUX))
 #define MAINBOARD_EC_SMI_EVENTS \
 	(EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_CLOSED))
 /* EC can wake from S5 with lid or power button */