Strange construct in binman description

[Simon Glass]

Hi Marcel,

I just noticed this in an imx8 description:

binman_configuration: @config-SEQ {

Since this is a generator node, binman blindly generates a phandle for
each not it generates. This means that if there is more than one
config node, then they will have duplicate phandles.

I have sent a series to correct this, but it fails the build on:
imx8mm_venice imx8mn_venice imx8mp_venice

I am a bit unsure about what this is supposed to do. Could you please
take a look?

Regards,
Simon