usb: dwc2: Switch to use device_property_count_u32()

Use use device_property_count_u32() directly, that makes code neater.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: NMinas Harutyunyan <hminas@synopsys.com>
Link: https://lore.kernel.org/r/20190723191639.67883-1-andriy.shevchenko@linux.intel.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/dwc2/params.c

@@ -404,10 +404,7 @@ static void dwc2_get_device_properties(struct dwc2_hsotg *hsotg)
 		device_property_read_u32(hsotg->dev, "g-np-tx-fifo-size",
 					 &p->g_np_tx_fifo_size);
 
-		num = device_property_read_u32_array(hsotg->dev,
-						     "g-tx-fifo-size",
-						     NULL, 0);
-
+		num = device_property_count_u32(hsotg->dev, "g-tx-fifo-size");
 		if (num > 0) {
 			num = min(num, 15);
 			memset(p->g_tx_fifo_size, 0,