soc/intel: Configure PAVP at compile-time

Expose configuration of Intel PAVP (Protected Audio-Video Path, a
digital rights protection/management (DRM) technology for
multimedia content) to Kconfig.

Per the FSP default, this was always being enabled previously.

Change-Id: I2aae741bb30e3be3c64324cd6334778bd271a903
Signed-off-by: Benjamin Doron <benjamin.doron00@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42745
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/src/soc/intel/apollolake/chip.c b/src/soc/intel/apollolake/chip.c
index 96b0900..a4ed8bdc 100644
--- a/src/soc/intel/apollolake/chip.c
+++ b/src/soc/intel/apollolake/chip.c
@@ -697,6 +697,8 @@
 	dev = pcidev_path_on_root(SA_DEVFN_IGD);
 	silconfig->PeiGraphicsPeimInit = CONFIG(RUN_FSP_GOP) && is_dev_enabled(dev);
 
+	silconfig->PavpEnable = CONFIG(PAVP);
+
 	mainboard_silicon_init_params(silconfig);
 }