usb: dwc3: gadget: improve command completion debug message

the previous message had too little meaning. Make
it more human readable and use the macro we already
had for extracting the command completion status out
of DEPCMDn register.

Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/dwc3/gadget.c

@@ -169,8 +169,8 @@ int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
 	do {
 		reg = dwc3_readl(dwc->regs, DWC3_DEPCMD(ep));
 		if (!(reg & DWC3_DEPCMD_CMDACT)) {
-			dev_vdbg(dwc->dev, "CMD Compl Status %d DEPCMD %04x\n",
-					((reg & 0xf000) >> 12), reg);
+			dev_vdbg(dwc->dev, "Command Complete --> %d\n",
+					DWC3_DEPCMD_STATUS(reg));
 			return 0;
 		}