regulator: Add REGULATOR_LINEAR_RANGE macro

Add REGULATOR_LINEAR_RANGE macro and convert regulator drivers to use it.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/drivers/regulator/wm831x-ldo.c b/drivers/regulator/wm831x-ldo.c
index a958140..9111b65 100644
--- a/drivers/regulator/wm831x-ldo.c
+++ b/drivers/regulator/wm831x-ldo.c
@@ -63,8 +63,8 @@
  */
 
 static const struct regulator_linear_range wm831x_gp_ldo_ranges[] = {
-	{ .min_uV =  900000, .min_sel =  0, .max_sel = 14, .uV_step =  50000 },
-	{ .min_uV = 1700000, .min_sel = 15, .max_sel = 31, .uV_step = 100000 },
+	REGULATOR_LINEAR_RANGE(900000, 0, 14, 50000),
+	REGULATOR_LINEAR_RANGE(1700000, 15, 31, 100000),
 };
 
 static int wm831x_gp_ldo_set_suspend_voltage(struct regulator_dev *rdev,
@@ -330,8 +330,8 @@
  */
 
 static const struct regulator_linear_range wm831x_aldo_ranges[] = {
-	{ .min_uV = 1000000, .min_sel =  0, .max_sel = 12, .uV_step =  50000 },
-	{ .min_uV = 1700000, .min_sel = 13, .max_sel = 31, .uV_step = 100000 },
+	REGULATOR_LINEAR_RANGE(1000000, 0, 12, 50000),
+	REGULATOR_LINEAR_RANGE(1700000, 13, 31, 100000),
 };
 
 static int wm831x_aldo_set_suspend_voltage(struct regulator_dev *rdev,