atomisp: remove a sysfs error message that can be used to log spam

Instead of logging this just report ERANGE as an error, which will give something close to the
right user space report.

The others of these were already removed by Dan Carpenter's patch.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/media/atomisp/pci/atomisp2/atomisp_drvfs.c

@@ -107,9 +107,7 @@ static ssize_t iunit_dbglvl_store(struct device_driver *drv, const char *buf,
 	if (kstrtouint(buf, 10, &iunit_debug.dbglvl)
 		|| iunit_debug.dbglvl < 1
 		|| iunit_debug.dbglvl > 9) {
-		dev_err(atomisp_dev, "%s setting %d value invalid, should be [1,9]\n",
-			__func__, iunit_debug.dbglvl);
-		return -EINVAL;
+		return -ERANGE;
 	}
 	atomisp_css_debug_set_dtrace_level(iunit_debug.dbglvl);