ec/google/chromeec: Add retimer handle to Type C conn

Some platforms have retimers which can be configured via the EC. Add a
handle to these retimer devices to the Type C connector device, using
devicetree references.

BUG=b:208883648
TEST=Verify disassembled SSDT on brya.
BRANCH=None

Signed-off-by: Prashant Malani <pmalani@chromium.org>
Change-Id: Ic0480b08c6d6a7562cca57192e49b8ea2a33b51e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63793
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

src/ec/google/chromeec/chip.h

@@ -11,6 +11,7 @@
 struct ec_google_chromeec_config {
 	/* Pointer to PMC Mux connector for each Type-C port */
 	DEVTREE_CONST struct device *mux_conn[MAX_TYPEC_PORTS];
+	DEVTREE_CONST struct device *retimer_conn[MAX_TYPEC_PORTS];
 };
 
 #endif /* EC_GOOGLE_CHROMEEC_CHIP_H */

src/ec/google/chromeec/ec_acpi.c

@@ -195,6 +195,7 @@ static void fill_ssdt_typec_device(const struct device *dev)
 			.orientation_switch = config->mux_conn[i],
 			.usb_role_switch = config->mux_conn[i],
 			.mode_switch = config->mux_conn[i],
+			.retimer_switch = config->retimer_conn[i],
 			.pld = &pld,
 		};