Wic uses bitbake variable ROOTFS_SIZE to set correspondent
partition size. This variable is a literal representing
float value. Wic crashes trying to convert it to int with
the error: invalid literal for int() with base 10: '10166.0'
Fixed this by converting variable to float and rounding result.
This should work for int and float literals.
Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>