staging: nvec: remove duplicated const

Sparse checking warning:
"drivers/staging/nvec/nvec_ps2.c:172:14: warning: duplicate const".
Remove the duplicated const to fix the warning.
Signed-off-by: Peng Fan <van.freenix@gmail.com>
Acked-by: Marc Dietrich <marvin24@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/nvec/nvec_ps2.c

@@ -169,8 +169,8 @@ static int nvec_mouse_resume(struct device *dev)
 }
 #endif
 
-static const SIMPLE_DEV_PM_OPS(nvec_mouse_pm_ops, nvec_mouse_suspend,
-				nvec_mouse_resume);
+static SIMPLE_DEV_PM_OPS(nvec_mouse_pm_ops, nvec_mouse_suspend,
+			 nvec_mouse_resume);
 
 static struct platform_driver nvec_mouse_driver = {
 	.probe  = nvec_mouse_probe,