pinctrl: imx6: support i.MX6SLL

There two iomuxc for i.MX6SLL. One is normal IOMUXC, the other
is for IOMUXC_SNVS.
Signed-off-by: NPeng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: NSimon Glass <sjg@chromium.org>

drivers/pinctrl/nxp/pinctrl-imx6.c

@@ -28,6 +28,8 @@ static const struct udevice_id imx6_pinctrl_match[] = {
 	{ .compatible = "fsl,imx6q-iomuxc", .data = (ulong)&imx6_pinctrl_soc_info },
 	{ .compatible = "fsl,imx6dl-iomuxc", .data = (ulong)&imx6_pinctrl_soc_info },
 	{ .compatible = "fsl,imx6sl-iomuxc", .data = (ulong)&imx6_pinctrl_soc_info },
+	{ .compatible = "fsl,imx6sll-iomuxc-snvs", .data = (ulong)&imx6_snvs_pinctrl_soc_info },
+	{ .compatible = "fsl,imx6sll-iomuxc", .data = (ulong)&imx6_pinctrl_soc_info },
 	{ .compatible = "fsl,imx6sx-iomuxc", .data = (ulong)&imx6_pinctrl_soc_info },
 	{ .compatible = "fsl,imx6ul-iomuxc", .data = (ulong)&imx6_pinctrl_soc_info },
 	{ .compatible = "fsl,imx6ull-iomuxc-snvs", .data = (ulong)&imx6_snvs_pinctrl_soc_info },