purism/librem13v2: Add GPIO pad configuration

The GPIO configuration matches the one from the original BIOS.
Some configs don't make much sense, but I kept it as is so it
would match (such as a NC pin with TX set to 1, or RXINV enabled).

Remove unnecessary early GPIO config.

Change-Id: Iaec8630cef9a523fb2e2503143aa4aa72fbedc1f
Signed-off-by: Youness Alaoui <youness.alaoui@puri.sm>
Reviewed-on: https://review.coreboot.org/19934
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/mainboard/purism/librem13v2/devicetree.cb b/src/mainboard/purism/librem13v2/devicetree.cb
index c8569d9b..0b49433 100644
--- a/src/mainboard/purism/librem13v2/devicetree.cb
+++ b/src/mainboard/purism/librem13v2/devicetree.cb
@@ -11,7 +11,7 @@
 	# Note that GPE events called out in ASL code rely on this
 	# route. i.e. If this route changes then the affected GPE
 	# offset bits also need to be changed.
-	register "gpe0_dw0" = "GPP_B"
+	register "gpe0_dw0" = "GPP_C"
 	register "gpe0_dw1" = "GPP_D"
 	register "gpe0_dw2" = "GPP_E"