[U-Boot] Is it OK to use target code from host tools

[Charles Manning]

Hello All

I am currently reworking a socfpga signer patch which is part of mkimage.

One thing I need to do is to stuff some bytes into a header ensuring the
endianism is correct.

This is a trivial thing to do in C, but I have been instructed to use the
existing functions put_unaligned_le32() etc.

These are part of Linux in linux/unaligned/access_ok.h. But this includes
<asm/*>

It seems to me that this mixing of host space and target space is
potentially problematic.

Is this a safe thing to do?

Thanks

Charles