skylake: re-enable PCIe L1 sub states

All boards should have their L1 sub states working now so
re-enable the defaults.

BUG=chrome-os-partner:41861
BRANCH=None
TEST=Built and booted glados into OS. PCIe devices show up still.

Change-Id: Ic040fa108a662e15bb97cf8b0961f0f56683e146
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 380491f8267e60c3c6bc62486aaf21e201fcfd36
Original-Change-Id: Idc6923b1fdd1c20d463eb7782be112f90b9adbfd
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/285170
Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/10989
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/soc/intel/skylake/Kconfig b/src/soc/intel/skylake/Kconfig
index 24fd961..207816d 100644
--- a/src/soc/intel/skylake/Kconfig
+++ b/src/soc/intel/skylake/Kconfig
@@ -31,8 +31,7 @@
 	select PCIEXP_ASPM
 	select PCIEXP_COMMON_CLOCK
 	select PCIEXP_CLK_PM
-	# External devices not working on glados
-	#select PCIEXP_L1_SUB_STATE
+	select PCIEXP_L1_SUB_STATE
 	select PLATFORM_USES_FSP1_1
 	select REG_SCRIPT
 	select RELOCATABLE_MODULES