ab8500_{bmdata,fg}: Add const attributes to some data arrays

This patch adds const attributes to AB8500 power and temperature related
read-only data arrays.

Signed-off-by: Hongbo Zhang <hongbo.zhang@linaro.org>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h
index 33b0253..3301b20 100644
--- a/include/linux/mfd/abx500.h
+++ b/include/linux/mfd/abx500.h
@@ -183,11 +183,11 @@
 	int low_high_vol_lvl;
 	int battery_resistance;
 	int n_temp_tbl_elements;
-	struct abx500_res_to_temp *r_to_t_tbl;
+	const struct abx500_res_to_temp *r_to_t_tbl;
 	int n_v_cap_tbl_elements;
-	struct abx500_v_to_cap *v_to_cap_tbl;
+	const struct abx500_v_to_cap *v_to_cap_tbl;
 	int n_batres_tbl_elements;
-	struct batres_vs_temp *batres_tbl;
+	const struct batres_vs_temp *batres_tbl;
 };
 
 /**