VIA chipsets: fix compilation without real mode code

The VIA chipsets CX700, VT8623 and VX800 required to be
configured with real mode option rom code enabled. This
patch fixes the issue and drops some unneeded header files.

Change-Id: I0d8a3f8f99c2eacec7666f08f85b99f09c06af84
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1833
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
9 files changed