sandbox: use CONFIG_VAL(SYS_MALLOC_F_LEN) to distinguish malloc pool size before...

sandbox: use CONFIG_VAL(SYS_MALLOC_F_LEN) to distinguish malloc pool size before relocation

SPL and normal u-boot stage use different malloc pool size
configuration before relocation, so use CONFIG_VAL(SYS_MALLOC_F_LEN)
to fit different boot stage.

Signed-off-by: Andy Yan <[email protected]>
Changes in v3:
- use CONFIG_VAL(), which suggested by Simon

Changes in v2: None

 arch/sandbox/cpu/start.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
Acked-by: Philipp Tomsich <[email protected]>
Reviewed-by: Philipp Tomsich <[email protected]>