[U-Boot] [PATCH] spl: imx6: Provide a SPL_SIZE_LIMIT default

[Fabio Estevam]

As explained in include/configs/imx6_spl.h. the i.MX6 SPL
size limit is 68KB (4KB header + 64KB max size).

Provide such limit for all i.MX6 boards that use SPL
to detect SPL size overflow in build time.

Signed-off-by: Fabio Estevam <festevam at gmail.com>
---
Hi Tom and Stefano,

In order to build fine for all mx6 boards the following
patch is needed:
https://lists.denx.de/pipermail/u-boot/2019-May/370224.html

Ran buildman successfully for all imx6 boards.

 common/spl/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index ac2f470032..48f6b39a75 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -28,6 +28,7 @@ config SPL_FRAMEWORK
 config SPL_SIZE_LIMIT
 	int "Maximum size of SPL image"
 	depends on SPL
+	default 69632 if ARCH_MX6
 	default 0
 	help
 	  Specifies the maximum length of the U-Boot SPL image.
-- 
2.17.1