ARM: dts: imx6ul: update i.MX 6UltraLite iomux headers

Add previously missing daisy chain configurations and several
additional pinmux options.

Synchronized with NXP Linux 4.9.11_1.0.0 release.
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>