The current method will treat hex values as 0 and would calculate the wrong size. This change switches back to an earlier method which used shell syntax to add the offset and size. Change-Id: I9fb2d9b323f113cc56a5ad2e38b47d2d22084f08 Signed-off-by: Gabe Black <gabeblack@chromium.org> Reviewed-on: http://review.coreboot.org/3432 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>