Make it easier to notice the common file for ChromeOS devices based on
the Exynos5250 by giving it the exynos5250 prefix that the boards have.
Signed-off-by: Mark Brown <broonie@linaro.org>
Acked-by: Tomasz Figa <t.figa@samsung.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>