Hello,

I recently ported barebox to a platform using an old AT91 chip (at91m55800a,
ARM7TDMI core). There is already a MACH_AT91 folder but this chip is
sufficiently different that I just made a new folder MACH_AT91_legacy. This
was just a test project for me to get familiar with using barebox.

I'm just wondering if there is any value in me merging in the code for this?
I realize it's a pretty old chipset, but I'm finding barebox very useful and
would like to contribute to it.

Thanks,
Marko