mb/google/fizz: Enable NIC leds

This patch enables customized NIC leds as follows:

	Green	Orange (Amber)
100M	off	blinking
1000M	on	blinking

BUG=b:65437780, b:68284778
TEST=Make sure the registers are programmed as expected and observe the
     LEDs are behaving as expected. Perform suspend/resume test and the
     LEDs are still working as expected.

Change-Id: I9bb1367a4c742c2755d620e14ee6dfe70ee7f34b
Signed-off-by: Gaggery Tsai <gaggery.tsai@intel.com>
Reviewed-on: https://review.coreboot.org/22293
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Furquan Shaikh <furquan@google.com>
diff --git a/src/mainboard/google/fizz/devicetree.cb b/src/mainboard/google/fizz/devicetree.cb
index 1590252..73a5c50 100644
--- a/src/mainboard/google/fizz/devicetree.cb
+++ b/src/mainboard/google/fizz/devicetree.cb
@@ -302,9 +302,15 @@
 			end
 		end # I2C #5
 		device pci 19.2 off  end # I2C #4
-		device pci 1c.0 on end # PCI Express Port 1
+		device pci 1c.0 on # PCI Express Port 1
+			chip drivers/net
+				register "customized_leds" = "0x0fa7"
+				device pci 00.0 on end
+			end
+		end # PCI Express Port 1
 		device pci 1c.1 off end # PCI Express Port 2
-		device pci 1c.2 on end # PCI Express Port 3 for LAN
+		# PCI Express Port 3 for LAN, but will be swapped to port 1
+		device pci 1c.2 on end
 		device pci 1c.3 on
 			chip drivers/intel/wifi
 				register "wake" = "GPE0_PCI_EXP"