[coreboot] [PATCH] cld before call

[Robert Millan]

Hi,

The Multiboot spec is a bit too permissive about this, as it doesn't
specify the state of direction flag when payload is called.  Some payloads
(we found this in ReactOS FreeLDR) assume it is cleared, and fail otherwise.

We adjusted GRUB to be sure it's always cleared.  I think coreboot should do
the same.  Here's a patch for v3.