cam_enc_4xx: 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: NAlbert ARIBAUD <albert.u.boot@aribaud.net>

board/ait/cam_enc_4xx/u-boot-spl.lds

@@ -25,7 +25,7 @@
  */
 
 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/cam_enc_4xx.h

@@ -230,7 +230,7 @@
 #define CONFIG_SPL_STACK		(0x00010000 + 0x7f00)
 
 #define CONFIG_SPL_TEXT_BASE		0x00000020 /*CONFIG_SYS_SRAM_START*/
-#define CONFIG_SPL_MAX_SIZE		12320
+#define CONFIG_SPL_MAX_FOOTPRINT	12288
 
 #ifndef CONFIG_SPL_BUILD
 #define CONFIG_SYS_TEXT_BASE		0x81080000