ALSA: AC97: Print AC97 flags in proc file to make debug it easier

While debugging some code paths in AC97 codec patches and its suspend
and resume functions, getting to know the flags has proved useful to
follow those code paths.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/ac97/ac97_proc.c

@@ -125,6 +125,8 @@ static void snd_ac97_proc_read_main(struct snd_ac97 *ac97, struct snd_info_buffe
         snd_iprintf(buffer, "PCI Subsys Device: 0x%04x\n\n",
                     ac97->subsystem_device);
 
+	snd_iprintf(buffer, "Flags: %x\n", ac97->flags);
+
 	if ((ac97->ext_id & AC97_EI_REV_MASK) >= AC97_EI_REV_23) {
 		val = snd_ac97_read(ac97, AC97_INT_PAGING);
 		snd_ac97_update_bits(ac97, AC97_INT_PAGING,