[U-Boot] [PATCH 1/3] README: document CONFIG_BOARD_SIZE_LIMIT

[Sascha Silbe]

CONFIG_BOARD_SIZE_LIMIT was introduced by f3a14d37 [Makefile: allow
boards to check file size limits] and is in use by several boards, but
never got documented.

Signed-off-by: Sascha Silbe <t-uboot at infra-silbe.de>
---
 README | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/README b/README
index a5c3e8d..760c417 100644
--- a/README
+++ b/README
@@ -3843,6 +3843,11 @@ use the "saveenv" command to store a valid environment.
 		later, once stdio is running and output goes to the LCD, if
 		present.
 
+- CONFIG_BOARD_SIZE_LIMIT:
+		Maximum size of the U-Boot image. When defined, the
+		build system checks that the actual size does not
+		exceed it.
+
 Low Level (hardware related) configuration options:
 ---------------------------------------------------
 
-- 
1.8.3.2