[U-Boot] [PATCH 1/3] Makefile: Add a warning for boards that don't use CONFIG_BLK

[Simon Glass]

The deadline for this has passed and we are starting to remove boards that
do not use driver model for block devices.

Add a noisy Makefile warning.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 Makefile | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Makefile b/Makefile
index 552687db538..8bf422f6a85 100644
--- a/Makefile
+++ b/Makefile
@@ -917,6 +917,13 @@ ifeq ($(CONFIG_DM_I2C_COMPAT)$(CONFIG_SANDBOX),y)
 	@echo "(possibly in a subsequent patch in your series)"
 	@echo "before sending patches to the mailing list."
 	@echo "===================================================="
+endif
+ifneq ($(CONFIG_BLK),y)
+	@echo "===================== WARNING ======================"
+	@echo "This board does not use CONFIG_BLK. Please update"
+	@echo "the board to use CONFIG_BLK before the end of 2018."
+	@echo "See doc/driver-model/MIGRATION.txt for more info."
+	@echo "===================================================="
 endif
 	@# Check that this build does not use CONFIG options that we do not
 	@# know about unless they are in Kconfig. All the existing CONFIG
-- 
2.19.1.1215.g8438c0b245-goog