at91, smartweb: use SPL_SYS_MALLOC_F_LEN

commit f1896c45: spl: make SPL and normal u-boot stage use independent SYS_MALLOC_F_LEN
introduced independent SYS_MALLOC_F_LEN for SPL and U-Boot.

Use it on the smartweb board, as above commit broke
the smartweb board.

Signed-off-by: Heiko Schocher <hs@denx.de>

configs/smartweb_defconfig

@@ -10,6 +10,7 @@ CONFIG_SPL_LIBGENERIC_SUPPORT=y
 CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_SPL_NAND_SUPPORT=y
 CONFIG_DEFAULT_DEVICE_TREE="at91sam9260-smartweb"
+CONFIG_SPL_SYS_MALLOC_F_LEN=0x400
 CONFIG_FIT=y
 CONFIG_SYS_EXTRA_OPTIONS="AT91SAM9260"
 CONFIG_ENV_IS_IN_NAND=y

include/configs/smartweb.h

@@ -199,9 +199,6 @@
 #define CONFIG_SYS_INIT_SP_ADDR		0x301000
 #define CONFIG_SPL_STACK_R
 #define CONFIG_SPL_STACK_R_ADDR		CONFIG_SYS_TEXT_BASE
-/* we have only 4k sram in SPL, so cut SYS_MALLOC_F_LEN */
-#undef CONFIG_SYS_MALLOC_F_LEN
-#define CONFIG_SYS_MALLOC_F_LEN 0x400
 #else
 /*
  * Initial stack pointer: 4k - GENERATED_GBL_DATA_SIZE in internal SRAM,