Add DT compatible string for a Gateworks GW7905-0x board based on
the i.MX8M Mini from NXP.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>