nds32: Move static keyword to the front of declaration

Move the static keyword to the front of declaration of
cpu_pmu_of_device_ids, and resolve the following compiler
warning that can be seen when building with warnings
enabled (W=1):

arch/nds32/kernel/perf_event_cpu.c:1122:1: warning:
  ‘static’ is not at beginning of declaration [-Wold-style-declaration]
Signed-off-by: Krzysztof Wilczynski <kw@linux.com>
Acked-by: Greentime Hu <green.hu@gmail.com>
Signed-off-by: Greentime Hu <green.hu@gmail.com>

arch/nds32/kernel/perf_event_cpu.c

@@ -1119,7 +1119,7 @@ static void cpu_pmu_init(struct nds32_pmu *cpu_pmu)
 		on_each_cpu(cpu_pmu->reset, cpu_pmu, 1);
 }
 
-const static struct of_device_id cpu_pmu_of_device_ids[] = {
+static const struct of_device_id cpu_pmu_of_device_ids[] = {
 	{.compatible = "andestech,nds32v3-pmu",
 	 .data = device_pmu_init},
 	{},