swap_size currently uses a hard coded percentage and ignores the
swap_ratio variable. Fortunately they are the same value currently. Make
the calculation use the variable to avoid problems in the future.
(From OE-Core rev: 2678ce668499af0e90994b9da8c518e85de56651)
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>