board: gateworks: venice: increase CONFIG_SYS_SPL_MALLOC_SIZE

commit 03f1f78a ("spl: fit: Prefer a malloc()'d buffer for loading images")'
changed the way buffer allocation worked for SPL to a more flexible
method.

For venice this caused breakage that is resolved by increasing the size
of CONFIG_SYS_SPL_MALLOC_SIZE as the current FIT slighly exceeds 512KiB.

Additionally remove the unnecessary comment on CONFIG_SPL_BSS_MAX_SIZE
and CONFIG_SYS_SPL_MALLOC_SIZE as the size is obvious from the define.
Signed-off-by: NTim Harvey <tharvey@gateworks.com>
Reviewed-by: NFabio Estevam <festevam@gmail.com>

include/configs/imx8mm_venice.h

@@ -19,9 +19,9 @@
 #ifdef CONFIG_SPL_BUILD
 #define CONFIG_SPL_STACK		0x920000
 #define CONFIG_SPL_BSS_START_ADDR	0x910000
-#define CONFIG_SPL_BSS_MAX_SIZE		SZ_8K	/* 8 KB */
+#define CONFIG_SPL_BSS_MAX_SIZE		SZ_8K
 #define CONFIG_SYS_SPL_MALLOC_START	0x42200000
-#define CONFIG_SYS_SPL_MALLOC_SIZE	SZ_512K	/* 512 KB */
+#define CONFIG_SYS_SPL_MALLOC_SIZE	SZ_1M
 
 /* malloc f used before GD_FLG_FULL_MALLOC_INIT set */
 #define CONFIG_MALLOC_F_ADDR		0x930000