soc/intel/skylake: Add integrated LAN config parameters

Add parameters to configure the integrated LAN via FSP.  Since
this takes over a PCI CLKREQ# pin it needs to know which pin
it should use, and there are additional parameters for LTR and
a "K1 power save" feature.

This was tested on a KBL-R board with integrated LAN, verifying
that the device is functional under Linux with the e1000e driver.

Change-Id: Idb200cec90a3c0d4d9c914bae9983a3bcdafcd06
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://review.coreboot.org/22856
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/intel/skylake/chip_fsp20.c b/src/soc/intel/skylake/chip_fsp20.c
index 2df013f..96c3b60 100644
--- a/src/soc/intel/skylake/chip_fsp20.c
+++ b/src/soc/intel/skylake/chip_fsp20.c
@@ -186,6 +186,12 @@
 	params->PchPmLanWakeFromDeepSx = config->WakeConfigPcieWakeFromDeepSx;
 
 	params->PchLanEnable = config->EnableLan;
+	if (config->EnableLan) {
+		params->PchLanLtrEnable = config->EnableLanLtr;
+		params->PchLanK1OffEnable = config->EnableLanK1Off;
+		params->PchLanClkReqSupported = config->LanClkReqSupported;
+		params->PchLanClkReqNumber = config->LanClkReqNumber;
+	}
 	params->SataSalpSupport = config->SataSalpSupport;
 	params->SsicPortEnable = config->SsicPortEnable;
 	params->ScsEmmcEnabled = config->ScsEmmcEnabled;