[PATCH] Makefile: Fix generation of flash.bin u-boot.itb with binman

[Marek Vasut]

On 2/25/21 9:50 PM, Marek Vasut wrote:
> In case binman is enabled, the u-boot.itb is generated using this tool
> and there is no direct u-boot.itb target, but instead the binman tool
> must be invoked. Add support for this case.
> 
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Peng Fan <peng.fan at nxp.com>
> Cc: Stefano Babic <sbabic at denx.de>

This bugfix is still missing from upstream.