xen: constify all instances of "struct attribute_group"

The functions these get passed to have been taking pointers to const
since at least 2.6.16.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/xen/xen-balloon.c b/drivers/xen/xen-balloon.c
index 3832e303c33a..3f7922ec13e3 100644
--- a/drivers/xen/xen-balloon.c
+++ b/drivers/xen/xen-balloon.c
@@ -207,7 +207,7 @@ static struct attribute *balloon_info_attrs[] = {
         NULL
 };
 
-static struct attribute_group balloon_info_group = {
+static const struct attribute_group balloon_info_group = {
         .name = "info",
         .attrs = balloon_info_attrs
 };