dm: MIGRATION: Add migration plan for CONFIG_SATA

As the core of the subsystem has been converted along with some of the
drivers, formalize a deadline for migration.

Cc: Akshay Bhat <akshaybhat@timesys.com>
Cc: Andreas Geisreiter <ageisreiter@dh-electronics.de>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Jason Liu <jason.hui.liu@nxp.com>
Cc: Ken Lin <Ken.Lin@advantech.com.tw>
Cc: Ludwig Zenz <lzenz@dh-electronics.de>
Cc: Marek Vasut <marex@denx.de>
Cc: Max Krummenacher <max.krummenacher@toradex.com>
Cc: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Soeren Moch <smoch@web.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tim Harvey <tharvey@gateworks.com>
Cc: Troy Kisky <troy.kisky@boundarydevices.com>
Cc: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Cc: York Sun <york.sun@nxp.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/Makefile b/Makefile
index 9172a1a..0ceee0c 100644
--- a/Makefile
+++ b/Makefile
@@ -940,6 +940,14 @@
 	@echo "===================================================="
 endif
 endif
+ifeq ($(CONFIG_LIBATA)$(CONFIG_DM_SCSI)$(CONFIG_MVSATA_IDE),y)
+	@echo "===================== WARNING ======================"
+	@echo "This board does not use CONFIG_DM_SCSI. Please update"
+	@echo "the storage controller to use CONFIG_DM_SCSI before the v2019.07 release."
+	@echo "Failure to update by the deadline may result in board removal."
+	@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
 	@# options are whitelisted, so new ones should not be added.
diff --git a/doc/driver-model/MIGRATION.txt b/doc/driver-model/MIGRATION.txt
index 0b763f7..6df7e02 100644
--- a/doc/driver-model/MIGRATION.txt
+++ b/doc/driver-model/MIGRATION.txt
@@ -25,6 +25,16 @@
 and maintainers should submit patches switching over to using CONFIG_DM_USB and
 other base driver model options in time for inclusion in the 2019.07 rerelease.
 
+CONFIG_SATA
+-----------
+
+Status: In progress
+Deadline: 2019.07
+
+The subsystem itself has been converted along with many of the host controller
+and maintainers should submit patches switching over to using CONFIG_AHCI and
+other base driver model options in time for inclusion in the 2019.07 rerelease.
+
 CONFIG_BLK
 ----------