[PATCH] hwtracing: coresight: constify attribute_group structures.

[Arvind Yadav]

attribute_groups are not supposed to change at runtime. All functions
working with attribute_groups provided by <linux/sysfs.h> work with const
attribute_group. So mark the non-const structs as const.

File size before:
  text     data     bss     dec     hex filename
   2573     288     296    3157     c55 coresight-etm-perf.o

File size After adding 'const':
   text    data     bss     dec     hex filename
   2613     224     296    3133     c3d coresight-etm-perf.o

Signed-off-by: Arvind Yadav <arvind.yadav...@gmail.com>
---
 drivers/hwtracing/coresight/coresight-etm-perf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c 
b/drivers/hwtracing/coresight/coresight-etm-perf.c
index 288a423..e97775d 100644
--- a/drivers/hwtracing/coresight/coresight-etm-perf.c
+++ b/drivers/hwtracing/coresight/coresight-etm-perf.c
@@ -60,7 +60,7 @@ struct etm_event_data {
        NULL,
 };
 
-static struct attribute_group etm_pmu_format_group = {
+static const struct attribute_group etm_pmu_format_group = {
        .name   = "format",
        .attrs  = etm_config_formats_attr,
 };
-- 
1.9.1