regulator: ab8500-ext: Remove unnecessary checking for ab9540 and ab8540

This code was added by commit 0fe17e20a6
"regulator: ab8500-ext: Add support for AB9540 regulators"
and commit bd44e2cb "regulator: ab8500: Also check for AB8505 based platforms"

The original patch[1] is to set info->desc.ops = &ab9540_ext_regulator_ops.

However, ab9540_ext_regulator_ops is identical to ab8500_ext_regulator_ops[2].
Thus we can complete remove the unnecessary checking for ab9540 and ab8540.

[1] https://lkml.org/lkml/2013/3/28/333
[2] https://lkml.org/lkml/2013/4/1/178

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

drivers/regulator/ab8500-ext.c

@@ -389,15 +389,8 @@ int ab8500_ext_regulator_init(struct platform_device *pdev)
 		config.init_data = &pdata->ext_regulator[i];
 		config.driver_data = info;
 
-		if ((is_ab9540(ab8500) || is_ab8540(ab8500)) &&
-		    ((info->desc.id == AB8500_EXT_SUPPLY1) ||
-		     (info->desc.id == AB8500_EXT_SUPPLY2) ||
-		     (info->desc.id == AB8500_EXT_SUPPLY3)))
-			info->desc.ops = &ab8500_ext_regulator_ops;
-
 		/* register regulator with framework */
 		info->rdev = regulator_register(&info->desc, &config);
-
 		if (IS_ERR(info->rdev)) {
 			err = PTR_ERR(info->rdev);
 			dev_err(&pdev->dev, "failed to register regulator %s\n",