smdk5250, snow: convert to CONFIG_SPL_MAX_FOOTPRINT

This target wants to check full SPL size, BSS included.
Remove CONFIG_SPL_MAX_SIZE definition and instead define
CONFIG_SPL_MAX_FOOTPRINT.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>

board/samsung/smdk5250/smdk5250-uboot-spl.lds

@@ -26,7 +26,7 @@
  */
 
 MEMORY { .sram : ORIGIN = CONFIG_SPL_TEXT_BASE, \
-		LENGTH = CONFIG_SPL_MAX_SIZE }
+		LENGTH = CONFIG_SPL_MAX_FOOTPRINT }
 
 OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
 OUTPUT_ARCH(arm)

include/configs/exynos5250-dt.h

@@ -141,7 +141,7 @@
 /* specific .lds file */
 #define CONFIG_SPL_LDSCRIPT	"board/samsung/smdk5250/smdk5250-uboot-spl.lds"
 #define CONFIG_SPL_TEXT_BASE	0x02023400
-#define CONFIG_SPL_MAX_SIZE	(14 * 1024)
+#define CONFIG_SPL_MAX_FOOTPRINT	(14 * 1024)
 
 #define CONFIG_BOOTCOMMAND	"mmc read 40007000 451 2000; bootm 40007000"