[SeaBIOS] [PATCH] config: allow DEBUG_IO for !QEMU

[Kevin O'Connor]

On Wed, Jun 05, 2013 at 09:37:24AM +0200, Gerd Hoffmann wrote:
> Make DEBUG_IO depend on QEMU_HARDWARE instead of QEMU, so
> it can be enabled for seabios builds running indirectly
> (coreboot, csm) on qemu.
> 
> Add runtime check for PF_QEMU to debug port console to make
> sure we don't poke on random ports on physical hardware.

Looks okay to me.

-Kevin