configs/stm32f469_disco_sd_defconfig: explicitly set U-Boot version
The version of U-Boot must be explicitly set because if you keep the
default setting, the bootloader is continuously updated in buildroot with
the risk of building a non-working image.
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
(cherry picked from commit 924b163b1e4e1f82ea758a7e69a73f9e6b888e62)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Dario Binacchi