Document compatibles used on other Exynos-based boards (non-Samsung):
FriendlyARM, Google, Hardkernel and Insignal.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: Hakjoo Kim <ruppi.kim@hardkernel.com>
Reviewed-by: NJavier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: NKukjin Kim <kgene@kernel.org>