spl: make SPL and normal u-boot stage use independent SYS_MALLOC_F_LEN

Some platforms have very limited SRAM to run SPL code, so there may
not be the same amount space for a malloc pool before relocation in
the SPL stage as the normal U-Boot stage.

Make SPL and (the full) U-Boot stage use independent SYS_MALLOC_F_LEN,
so the size of pre-relocation malloc pool can be configured memory
space independently.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
[fixed up commit-message:]
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
diff --git a/cmd/bdinfo.c b/cmd/bdinfo.c
index 8971697..81ac78d 100644
--- a/cmd/bdinfo.c
+++ b/cmd/bdinfo.c
@@ -344,9 +344,9 @@
 #ifdef CONFIG_BOARD_TYPES
 	printf("Board Type  = %ld\n", gd->board_type);
 #endif
-#ifdef CONFIG_SYS_MALLOC_F
+#if CONFIG_VAL(SYS_MALLOC_F_LEN)
 	printf("Early malloc usage: %lx / %x\n", gd->malloc_ptr,
-	       CONFIG_SYS_MALLOC_F_LEN);
+	       CONFIG_VAL(SYS_MALLOC_F_LEN));
 #endif
 	if (gd->fdt_blob)
 		printf("fdt_blob = %p\n", gd->fdt_blob);