usb: dwc3: qcom: Use of_clk_get_parent_count()

Use of_clk_get_parent_count() instead of open coding.

Signed-off-by: Kefeng Wang <[e-mail]>
Signed-off-by: Felipe Balbi <[e-mail]>

drivers/usb/dwc3/dwc3-qcom.c

···
 		goto reset_assert;
 	}
 
-	ret = dwc3_qcom_clk_init(qcom, of_count_phandle_with_args(np,
-						"clocks", "#clock-cells"));
+	ret = dwc3_qcom_clk_init(qcom, of_clk_get_parent_count(np));
 	if (ret) {
 		dev_err(dev, "failed to get clocks\n");
 		goto reset_assert;