mb/siemens/mc_apl1: Prefer include <soc/gpio.h> via <gpio.h>

Change-Id: If43089560a391d6a844ef1716b277e3146c66945
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82861
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>

src/mainboard/siemens/mc_apl1/variants/baseboard/include/baseboard/variants.h

@@ -3,7 +3,7 @@
 #ifndef _BASEBOARD_VARIANTS_H_
 #define _BASEBOARD_VARIANTS_H_
 
-#include <soc/gpio.h>
+#include <gpio.h>
 
 /*
  * The next set of functions return the gpio table and fill in the number of