mb/google/nissa/var/dirks: Enable PCIE port 7 for Ethernet

Enable PCIE port 7 using clk 3 for RTL8111H Ethernet.

BUG=b:388117663
TEST=build pass and insure LAN function work properly

Change-Id: I60c30f207aa92ba9f52da0b95b647307a73e9d13
Signed-off-by: David Wu <david_wu@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86930
Reviewed-by: Ivy Jian <ivy.jian@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>

src/mainboard/google/brya/Kconfig

@@ -223,6 +223,9 @@ config BOARD_GOOGLE_CROTA
 
 config BOARD_GOOGLE_DIRKS
 	select BOARD_GOOGLE_BASEBOARD_NISSA
+	select RT8168_GEN_ACPI_POWER_RESOURCE
+	select RT8168_GET_MAC_FROM_VPD
+	select RT8168_SET_LED_MODE
 	select SOC_INTEL_TWINLAKE
 	select SYSTEM_TYPE_MINIPC
 

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

@@ -222,6 +222,20 @@ chip soc/intel/alderlake
 				device generic 0 on end
 			end
 		end
+		device ref pcie_rp7 on
+			# Enable PCIE 7 using clk 3
+			register "pch_pcie_rp[PCH_RP(7)]" = "{
+				.clk_src = 3,
+				.clk_req = 3,
+				.flags = PCIE_RP_LTR | PCIE_RP_AER,
+			}"
+			chip drivers/net
+				register "customized_leds" = "0x05af"
+				register "wake" = "GPE0_DW2_14"	# GPP_F14
+				register "device_index" = "0"
+				device pci 00.0 on end
+			end
+		end # RTL8111H Ethernet NIC
 		device ref pcie_rp11 on
 			# Enable wlan PCIe 11 using clk 2
 			probe WIFI_TYPE WIFI_PCIE