The same script is going to be used by the Chromebook Elm to generate
a bootable SD / USB image. Therefore, move the script out of the snow
folder to one level above (board/chromebook/snow -> board/chromebook).
Update the chromebook_snow_defconfig to reflect the new location of
the script.
Signed-off-by: Bilal Wasim <bilalwasim676@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
