mx6: toradex: Remove custom CONFIG_SPL_PAD_TO definition

CONFIG_SPL_PAD_TO is already defined inside "imx6_spl.h", so there
is no need to redefine it in the board config files.
Signed-off-by: NFabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: NStefan Agner <stefan.agner@toradex.com>

include/configs/apalis_imx6.h

@@ -23,7 +23,6 @@
 
 #ifdef CONFIG_SPL
 #include "imx6_spl.h"
-#define CONFIG_SPL_PAD_TO		0x11000 /* 4k IVT/DCD, 64k SPL */
 #endif
 
 #define CONFIG_CMDLINE_TAG

include/configs/colibri_imx6.h

@@ -21,7 +21,6 @@
 
 #ifdef CONFIG_SPL
 #include "imx6_spl.h"
-#define CONFIG_SPL_PAD_TO		0x11000 /* 4k IVT/DCD, 64k SPL */
 #endif
 
 #define CONFIG_CMDLINE_TAG