x86/platform/uv: Constify static attribute_group struct

The only use of base_attr_group and hubless_base_attr_group is to pass
their addresses to sysfs_create_group() and sysfs_remove_group(), both
which takes pointers to const attribute_group structs. Make them const
to allow the compiler to put them in read-only memory.
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Reviewed-by: Justin Ernst <justin.ernst@hpe.com>
Link: https://lore.kernel.org/r/20210605203807.60547-5-rikard.falkeborn@gmail.comSigned-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/platform/x86/uv_sysfs.c

@@ -778,7 +778,7 @@ static struct attribute *base_attrs[] = {
 	NULL,
 };
 
-static struct attribute_group base_attr_group = {
+static const struct attribute_group base_attr_group = {
 	.attrs = base_attrs
 };
 
@@ -823,7 +823,7 @@ static struct attribute *hubless_base_attrs[] = {
 	NULL,
 };
 
-static struct attribute_group hubless_base_attr_group = {
+static const struct attribute_group hubless_base_attr_group = {
 	.attrs = hubless_base_attrs
 };