cpufreq: qoriq: Add ls1028a chip support

Enable cpufreq feature on ls1028a chip by adding its compatible
string.
Signed-off-by: Yuantian Tang <andy.tang@nxp.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/cpufreq/qoriq-cpufreq.c

@@ -280,6 +280,7 @@ static const struct of_device_id node_matches[] __initconst = {
 
 	{ .compatible = "fsl,ls1012a-clockgen", },
 	{ .compatible = "fsl,ls1021a-clockgen", },
+	{ .compatible = "fsl,ls1028a-clockgen", },
 	{ .compatible = "fsl,ls1043a-clockgen", },
 	{ .compatible = "fsl,ls1046a-clockgen", },
 	{ .compatible = "fsl,ls1088a-clockgen", },