util/spd_tools: Remove PLK platform

Currently spd_tools treats PCO and PLK as separate platforms. This is
unnecessary since they have the same SPD requirements. Remove PLK, and
use PCO as the platform for all zork variants.

BUG=b:191776301
TEST=None

Signed-off-by: Reka Norman <rekanorman@google.com>
Change-Id: I7eeeab53fb3e0d92c3675fb80b4747297d4257ab
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57771
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>

spd/ddr4/platforms_manifest.generated.txt

@@ -3,4 +3,3 @@
 
 TGL,set-0
 PCO,set-0
-PLK,set-0

util/spd_tools/src/part_id_gen/part_id_gen.go

@@ -39,7 +39,6 @@ var supportedPlatforms = [...]string{
 	"ADL",
 	"JSL",
 	"PCO",
-	"PLK",
 	"CZN",
 }
 

util/spd_tools/src/spd_gen/ddr4.go

@@ -241,7 +241,7 @@ const (
 /* ------------------------------------------------------------------------------------------ */
 
 var DDR4PlatformSetMap = map[int][]int{
-	0: {PlatformTGL, PlatformPCO, PlatformPLK},
+	0: {PlatformTGL, PlatformPCO},
 }
 
 var DDR4PartAttributeMap = map[string]DDR4MemAttributes{}

util/spd_tools/src/spd_gen/spd_gen.go

@@ -43,7 +43,6 @@ const (
 	PlatformADL
 	PlatformJSL
 	PlatformPCO
-	PlatformPLK
 	PlatformCZN
 	PlatformMax
 )
@@ -62,7 +61,6 @@ var platformNames = map[int]string{
 	PlatformADL: "ADL",
 	PlatformJSL: "JSL",
 	PlatformPCO: "PCO",
-	PlatformPLK: "PLK",
 	PlatformCZN: "CZN",
 }