wlcore: add const to bin_attribute structure

Add const to bin_attribute structure as it is only passed to the
functions sysfs_{remove/create}_bin_file. The corresponding arguments
are of type const, so declare the structure to be const.
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/ti/wlcore/sysfs.c

@@ -138,7 +138,7 @@ static ssize_t wl1271_sysfs_read_fwlog(struct file *filp, struct kobject *kobj,
 	return len;
 }
 
-static struct bin_attribute fwlog_attr = {
+static const struct bin_attribute fwlog_attr = {
 	.attr = {.name = "fwlog", .mode = S_IRUSR},
 	.read = wl1271_sysfs_read_fwlog,
 };