Driver core: device_attribute parameters can often be const*

Most device_attributes are const, and are begging to be
put in a ro section. However, the create and remove
file interfaces were failing to propagate the const promise
which the only functions they call offer.

Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/include/linux/device.h b/include/linux/device.h
index 2a73d9b..aa5b3e66 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -319,9 +319,9 @@
 struct device_attribute dev_attr_##_name = __ATTR(_name, _mode, _show, _store)
 
 extern int __must_check device_create_file(struct device *device,
-					   struct device_attribute *entry);
+					   const struct device_attribute *entry);
 extern void device_remove_file(struct device *dev,
-			       struct device_attribute *attr);
+			       const struct device_attribute *attr);
 extern int __must_check device_create_bin_file(struct device *dev,
 					       struct bin_attribute *attr);
 extern void device_remove_bin_file(struct device *dev,