soc/intel/skylake: devicetree: introduce PchHdaVcType fsp parameter

Make the the FSP Parameter PchHdaVcType a devicetree setting and make
use of it in the devicetrees of all boards that currently set it.

Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Change-Id: Ibafc3b6bd2495658f2bd634218042ec413a89f5e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35542
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maxim Polyakov <max.senia.poliak@gmail.com>
diff --git a/src/mainboard/intel/kblrvp/variants/baseboard/devicetree.cb b/src/mainboard/intel/kblrvp/variants/baseboard/devicetree.cb
index 2a1cb8a..212721a 100644
--- a/src/mainboard/intel/kblrvp/variants/baseboard/devicetree.cb
+++ b/src/mainboard/intel/kblrvp/variants/baseboard/devicetree.cb
@@ -30,6 +30,7 @@
 	register "SkipExtGfxScan" = "1"
 	register "Device4Enable" = "1"
 	register "SaGv" = "SaGv_Enabled"
+	register "PchHdaVcType" = "Vc1"
 
 	register "pirqa_routing" = "PCH_IRQ11"
 	register "pirqb_routing" = "PCH_IRQ10"