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/intel/kunimitsu/devicetree.cb b/src/mainboard/intel/kunimitsu/devicetree.cb
index 85586cb..505a598 100644
--- a/src/mainboard/intel/kunimitsu/devicetree.cb
+++ b/src/mainboard/intel/kunimitsu/devicetree.cb
@@ -156,7 +156,7 @@
 	register "SendVrMbxCmd" = "2"
 
 	# Use default SD card detect GPIO configuration
-	register "sdcard_cd_gpio_default" = "GPP_A7"
+	register "sdcard_cd_gpio" = "GPP_A7"
 
 	# Lock Down
 	register "common_soc_config" = "{