mb/google/brya/var/marasov: update pch_espi setting

Add conn0/conn1 for pch_espi.

BUG=b:254365935
BRANCH=firmware-brya-14505.B
TEST=emerge-brya coreboot.

Signed-off-by: Frank Chu <Frank_Chu@pegatron.corp-partner.google.com>
Change-Id: I5969d2941c02400788d66521680fcd13d3a6b13f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69785
Reviewed-by: Frank Chu <frank_chu@pegatron.corp-partner.google.com>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/brya/variants/marasov/overridetree.cb

@@ -184,6 +184,13 @@ chip soc/intel/alderlake
 				device spi 0 on end
 			end # FPMCU
 		end
+		device ref pch_espi on
+			chip ec/google/chromeec
+				use conn0 as mux_conn[0]
+				use conn1 as mux_conn[1]
+				device pnp 0c09.0 on end
+			end
+		end
 		device ref pmc hidden
 			chip drivers/intel/pmc_mux
 				device generic 0 on
@@ -195,7 +202,7 @@ chip soc/intel/alderlake
 					chip drivers/intel/pmc_mux/conn
 						use usb2_port3 as usb2_port
 						use tcss_usb3_port3 as usb3_port
-						device generic 2 alias conn2 on end
+						device generic 1 alias conn1 on end
 					end
 				end
 			end