clk: sunxi-ng: fix not NULL terminated coccicheck error

Fix the following coccicheck error:
./drivers/clk/sunxi-ng/ccu-sun6i-rtc.c:348:1-2: sun6i_rtc_ccu_match is
not NULL terminated at line 348

Fixes: d91612d ("clk: sunxi-ng: Add support for the sun6i RTC clocks")
Signed-off-by: Wan Jiabing <[email protected]>
Reviewed-by: Jernej Skrabec <[email protected]>
Signed-off-by: Jernej Skrabec <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: Wan Jiabing

drivers/clk/sunxi-ng/ccu-sun6i-rtc.c

@@ -346,6 +346,7 @@ static const struct of_device_id sun6i_rtc_ccu_match[] = {
 		.compatible	= "allwinner,sun50i-r329-rtc",
 		.data		= &sun50i_r329_rtc_ccu_data,
 	},
+	{},
 };
 
 int sun6i_rtc_ccu_probe(struct device *dev, void __iomem *reg)