[ALSA] Add SNDRV_PCM_IOCTL_TSTAMP back to compat ioctl

The replaced one should be re-added for older alsa-lib.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

sound/core/pcm_compat.c

@@ -483,6 +483,7 @@ static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned l
 	switch (cmd) {
 	case SNDRV_PCM_IOCTL_PVERSION:
 	case SNDRV_PCM_IOCTL_INFO:
+	case SNDRV_PCM_IOCTL_TSTAMP:
 	case SNDRV_PCM_IOCTL_TTSTAMP:
 	case SNDRV_PCM_IOCTL_HWSYNC:
 	case SNDRV_PCM_IOCTL_PREPARE: