mb/google/soraka: enable AER for PCIe root port 0

Enable PCIe Advanced Error Reporting for PCIe root port 0.

Change-Id: I76742801e84449d0910ddadf31d39597df3263b9
Signed-off-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Reviewed-on: https://review.coreboot.org/21402
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/mainboard/google/poppy/variants/soraka/devicetree.cb b/src/mainboard/google/poppy/variants/soraka/devicetree.cb
index 3ac3aaf..87e4b83 100644
--- a/src/mainboard/google/poppy/variants/soraka/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/soraka/devicetree.cb
@@ -152,6 +152,8 @@
 	register "PcieRpClkReqSupport[0]" = "1"
 	# RP 1 uses SRCCLKREQ1#
 	register "PcieRpClkReqNumber[0]" = "1"
+	# RP 1, Enable Advanced Error Reporting
+	register PcieRpAdvancedErrorReporting[0] = "1"
 
 	register "usb2_ports[0]" = "USB2_PORT_LONG(OC0)"	# Type-C Port 1
 	register "usb2_ports[1]" = "USB2_PORT_MID(OC_SKIP)"	# Type-A Port