usb: dwc2: fix unbalanced phy control

Even when DWC2 is in (internal) suspended state, it should disable PHY
in suspend and then enable it in resume. This patch fixes unbalanced PHY
control sequence.
Tested-by: NJohn Youn <johnyoun@synopsys.com>
Acked-by: NJohn Youn <johnyoun@synopsys.com>
Signed-off-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

drivers/usb/dwc2/platform.c

@@ -301,8 +301,6 @@ static int __maybe_unused dwc2_suspend(struct device *dev)
 	if (dwc2_is_device_mode(dwc2)) {
 		ret = dwc2_hsotg_suspend(dwc2);
 	} else {
-		if (dwc2->lx_state == DWC2_L0)
-			return 0;
 		phy_exit(dwc2->phy);
 		phy_power_off(dwc2->phy);