soc: qcom: llcc: Use devm_bitmap_zalloc() when applicable

'drv_data->bitmap' is a bitmap. So use 'devm_bitmap_zalloc()' to simplify
code, improve the semantic.

This also fixes a spurious indentation.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/3ee83f75afa8754fade4fff6a03b57f0ae3ccc28.1640245993.git.christophe.jaillet@wanadoo.fr

drivers/soc/qcom/llcc-qcom.c

@@ -632,9 +632,8 @@ static int qcom_llcc_probe(struct platform_device *pdev)
 	for (i = 0; i < num_banks; i++)
 		drv_data->offsets[i] = i * BANK_OFFSET_STRIDE;
 
-	drv_data->bitmap = devm_kcalloc(dev,
-	BITS_TO_LONGS(drv_data->max_slices), sizeof(unsigned long),
-						GFP_KERNEL);
+	drv_data->bitmap = devm_bitmap_zalloc(dev, drv_data->max_slices,
+					      GFP_KERNEL);
 	if (!drv_data->bitmap) {
 		ret = -ENOMEM;
 		goto err;