[U-Boot] [Resend PATCH] tools: imximage: use 'new style' header length for imximage v1

[Martin Kaiser]

Thus wrote Martin Kaiser (lists at kaiser.cx):

> Resending this patch after one month of silence. Is there anything I can do to
> get this reviewed? My tests haven't shown any problems so far.

I just saw that the patch doesn't apply to master any more. I'll check
this and send an updated version.

Sorry for the noise,

   Martin