ALSA: pcm: Use standard lower_32_bits() and upper_32_bits()

Instead of open codes, use the standard macros for obtaining the lower
and upper 32bit values.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/core/oss/pcm_plugin.c

@@ -281,10 +281,10 @@ static int snd_pcm_plug_formats(const struct snd_mask *mask,
 		       SNDRV_PCM_FMTBIT_U32_BE | SNDRV_PCM_FMTBIT_S32_BE);
 	snd_mask_set(&formats, (__force int)SNDRV_PCM_FORMAT_MU_LAW);
 	
-	if (formats.bits[0] & (u32)linfmts)
-		formats.bits[0] |= (u32)linfmts;
-	if (formats.bits[1] & (u32)(linfmts >> 32))
-		formats.bits[1] |= (u32)(linfmts >> 32);
+	if (formats.bits[0] & lower_32_bits(linfmts))
+		formats.bits[0] |= lower_32_bits(linfmts);
+	if (formats.bits[1] & upper_32_bits(linfmts))
+		formats.bits[1] |= upper_32_bits(linfmts);
 	return snd_mask_test(&formats, (__force int)format);
 }