util/amdfwtool: Add Genoa support

Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I83e3c383faec0fd7b2cf768b7a4c237edd986666
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76469
Reviewed-by: Varshit Pandya <pandyavarshit@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>

util/amdfwtool/amdfwtool.h

@@ -26,7 +26,8 @@ enum platform {
 	PLATFORM_MENDOCINO,
 	PLATFORM_LUCIENNE,
 	PLATFORM_PHOENIX,
-	PLATFORM_GLINDA
+	PLATFORM_GLINDA,
+	PLATFORM_GENOA,
 };
 
 typedef enum _amd_fw_type {