ARM: dts: imx6*-hummingboard2: remove ar8035 include

Remove the AR8035 include, the file is now gone.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>