soc/intel/skylake: Clean up SD GPIO handling

This is to align with newer platforms.

Change-Id: If33ea3a7835ec071be3fd060f9712c47678bd6bf
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50963
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/poppy/variants/nautilus/devicetree.cb b/src/mainboard/google/poppy/variants/nautilus/devicetree.cb
index 9563298..6eb83ac 100644
--- a/src/mainboard/google/poppy/variants/nautilus/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/nautilus/devicetree.cb
@@ -273,7 +273,7 @@
 	register "tcc_offset" = "10"     # TCC of 90C
 
 	# Use default SD card detect GPIO configuration
-	register "sdcard_cd_gpio_default" = "GPP_E15"
+	register "sdcard_cd_gpio" = "GPP_E15"
 
 	device cpu_cluster 0 on
 		device lapic 0 on end