src/mainboard/novacustom/mtl-h/ramstage.c: Change FSP-S settings

Enable TCSS to notify the IGD about hot plug events and eventually
wake it up from D3 hot state.

Disabel PS_ON feature, as it is only available on desktops. In
Intel reference code it was involved in inhibiting the power gating
of certain IP blocks.

Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>

Author: miczyg1

src/mainboard/novacustom/mtl-h/ramstage.c

@@ -286,4 +286,6 @@ void mainboard_silicon_init_params(FSP_S_CONFIG *params)
 
 	params->PmcPdEnable = 1;
 	params->TcCstateLimit = 10;
+	params->TcNotifyIgd = 1;
+	params->PsOnEnable = 0;
 }