[ALSA] usb-audio - show exact synchronous frequency in proc file

USB generic driver
In the streamX proc file, show the exact number of samples per
USB frame as 16.16 hexadecimal floating point value.
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>

sound/usb/usbaudio.c

@@ -1990,10 +1990,11 @@ static void proc_dump_substream_status(snd_usb_substream_t *subs, snd_info_buffe
 			snd_iprintf(buffer, "%d ", subs->dataurb[i].packets);
 		snd_iprintf(buffer, "]\n");
 		snd_iprintf(buffer, "    Packet Size = %d\n", subs->curpacksize);
-		snd_iprintf(buffer, "    Momentary freq = %u Hz\n",
+		snd_iprintf(buffer, "    Momentary freq = %u Hz (%#x.%04x)\n",
 			    snd_usb_get_speed(subs->dev) == USB_SPEED_FULL
 			    ? get_full_speed_hz(subs->freqm)
-			    : get_high_speed_hz(subs->freqm));
+			    : get_high_speed_hz(subs->freqm),
+			    subs->freqm >> 16, subs->freqm & 0xffff);
 	} else {
 		snd_iprintf(buffer, "  Status: Stop\n");
 	}