LF-4882-02 input: keyboard: snvs_pwrkey: Change the clock name to null

The clock will be get failed if the clock name is not 'snvs',
it is not what we expected if the clock need to be managed by driver.
As for the SNVS module, there is only one clock for it, so assigned
a unspecified clock name 'NULL'.

Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>

drivers/input/keyboard/snvs_pwrkey.c

@@ -231,7 +231,7 @@ static int imx_snvs_pwrkey_probe(struct platform_device *pdev)
 
 	pdata->emulate_press = of_property_read_bool(np, "emulate-press");
 
-	pdata->clk = devm_clk_get(&pdev->dev, "snvs");
+	pdata->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(pdata->clk)) {
 		pdata->clk = NULL;
 	} else {