arm: mvebu: Add default SPL_SIZE_LIMIT for 32-bit SoCs

32-bit Marvell Armada BootROMs limit maximal size of SPL image to 192 kB.
So define 192 kB (= 0x30000) limit as default value for SPL_SIZE_LIMIT.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index e1b2a42..f2422d2 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -40,6 +40,7 @@
 	hex "Maximum size of SPL image"
 	default 0x11000 if ARCH_MX6 && !MX6_OCRAM_256KB
 	default 0x31000 if ARCH_MX6 && MX6_OCRAM_256KB
+	default 0x30000 if ARCH_MVEBU && ARMADA_32BIT
 	default 0x0
 	help
 	  Specifies the maximum length of the U-Boot SPL image.