haswell: Fix VGA option rom INT15 handler

The format of this function changed but was not updated in
all mainboards.  This fixes BaskingRidge and WTM2.

The int15 handler no longer takes a regs structure as an
argument and instead uses global variables.  The yabel interface
is now similar enough that we can drop the duplicate handler.

Change-Id: Ia717ae14f99cee6d83ccdb1e26b9d7defe1638c4
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/48896
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/3230
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2 files changed