mb/amd/onyx_poc/devicetree: explicitly assign PCIe engine type

Explicitly assign the 'PCIE' value to the 'type' field of the
corresponding MPIO chips in the devicetree. Since the mpio_type enum
element 'PCIE' has the value 0, this won't change the behavior, but
explicitly assigning this makes this easier to understand.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I84a364cf16c99ba11f67cf033962bbf2c982f6ff
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81095
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Varshit Pandya <pandyavarshit@gmail.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
diff --git a/src/mainboard/amd/onyx_poc/devicetree.cb b/src/mainboard/amd/onyx_poc/devicetree.cb
index 39c681d..3597847 100644
--- a/src/mainboard/amd/onyx_poc/devicetree.cb
+++ b/src/mainboard/amd/onyx_poc/devicetree.cb
@@ -57,6 +57,7 @@
 		device ref rcec_0 on end
 		device ref gpp_bridge_0_0_a on
 			chip vendorcode/amd/opensil/genoa_poc/mpio # P2
+				register "type" = "PCIE"
 				register "start_lane" = "48"
 				register "end_lane" = "63"
 				register "gpio_group" = "1"
@@ -66,6 +67,7 @@
 		end
 		device ref gpp_bridge_0_0_b on
 			chip vendorcode/amd/opensil/genoa_poc/mpio # G2
+				register "type" = "PCIE"
 				register "start_lane" = "112"
 				register "end_lane" = "127"
 				register "gpio_group" = "1"
@@ -76,6 +78,7 @@
 		end
 		device ref gpp_bridge_0_0_c on
 			chip vendorcode/amd/opensil/genoa_poc/mpio
+				register "type" = "PCIE"
 				register "start_lane" = "128"
 				register "end_lane" = "131"
 				register "gpio_group" = "1"
@@ -98,6 +101,7 @@
 		device ref rcec_1 on end
 		device ref gpp_bridge_1_0_a on
 			chip vendorcode/amd/opensil/genoa_poc/mpio # P3
+				register "type" = "PCIE"
 				register "start_lane" = "16"
 				register "end_lane" = "31"
 				register "gpio_group" = "1"
@@ -107,6 +111,7 @@
 		end
 		device ref gpp_bridge_1_0_b on
 			chip vendorcode/amd/opensil/genoa_poc/mpio # G3
+				register "type" = "PCIE"
 				register "start_lane" = "80"
 				register "end_lane" = "95"
 				register "gpio_group" = "1"
@@ -121,6 +126,7 @@
 		device ref rcec_2 on end
 		device ref gpp_bridge_2_0_a on
 			chip vendorcode/amd/opensil/genoa_poc/mpio # P1
+				register "type" = "PCIE"
 				register "start_lane" = "32"
 				register "end_lane" = "47"
 				register "gpio_group" = "1"
@@ -131,6 +137,7 @@
 		end
 		device ref gpp_bridge_2_0_b on
 			chip vendorcode/amd/opensil/genoa_poc/mpio # G1
+				register "type" = "PCIE"
 				register "start_lane" = "64"
 				register "end_lane" = "79"
 				register "gpio_group" = "1"
@@ -146,6 +153,7 @@
 		device ref rcec_3 on end
 		device ref gpp_bridge_3_0_a on
 			chip vendorcode/amd/opensil/genoa_poc/mpio # P0
+				register "type" = "PCIE"
 				register "start_lane" = "0"
 				register "end_lane" = "15"
 				register "gpio_group" = "1"
@@ -155,6 +163,7 @@
 		end
 		device ref gpp_bridge_3_0_b on
 			chip vendorcode/amd/opensil/genoa_poc/mpio # G0
+				register "type" = "PCIE"
 				register "start_lane" = "96"
 				register "end_lane" = "111"
 				register "gpio_group" = "1"
@@ -164,6 +173,7 @@
 		end
 		device ref gpp_bridge_3_0_c on # WAFL
 			chip vendorcode/amd/opensil/genoa_poc/mpio
+				register "type" = "PCIE"
 				register "start_lane" = "132"
 				register "end_lane" = "133"
 				register "gpio_group" = "1"
@@ -173,6 +183,7 @@
 		end
 		device ref gpp_bridge_3_1_c on # BMC
 			chip vendorcode/amd/opensil/genoa_poc/mpio
+				register "type" = "PCIE"
 				register "start_lane" = "134"
 				register "end_lane" = "134"
 				register "gpio_group" = "1"
@@ -183,6 +194,7 @@
 		end
 		device ref gpp_bridge_3_2_c on # BMC
 			chip vendorcode/amd/opensil/genoa_poc/mpio
+				register "type" = "PCIE"
 				register "start_lane" = "135"
 				register "end_lane" = "135"
 				register "gpio_group" = "1"