[U-Boot] Makefile: Update minimum dtc version to 1.4.3

[Marek Vasut]

On 09/22/2017 04:20 PM, Tom Rini wrote:
> On Fri, Sep 15, 2017 at 01:15:25PM -0400, Tom Rini wrote:
> 
>> With support for overlays and calling the -@ flag to dtc we need to have
>> at least 1.4.3 available now.
>>
>> Cc: Simon Glass <sjg at chromium.org>
>> Reported-by: Stephen Warren <swarren at wwwdotorg.org>
>> Signed-off-by: Tom Rini <trini at konsulko.com>
> 
> Applied to u-boot/master, thanks!

Debian still only has 1.4.2 even in unstable, so u-boot/master no longer
builds on any debian system.

-- 
Best regards,
Marek Vasut