ALSA: intel8x0m: Proper endian notations

The BD address tables in intel8x0m driver are in little-endian, hence
they should be represented as __le32 instead u32.

Spotted by sparse, warnings like:
  sound/pci/intel8x0m.c:406:40: warning: incorrect type in assignment (different base types)
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/intel8x0m.c

@@ -168,7 +168,7 @@ enum { ALID_MDMIN, ALID_MDMOUT, ALID_MDMLAST = ALID_MDMOUT };
 struct ichdev {
 	unsigned int ichd;			/* ich device number */
 	unsigned long reg_offset;		/* offset to bmaddr */
-	u32 *bdbar;				/* CPU address (32bit) */
+	__le32 *bdbar;				/* CPU address (32bit) */
 	unsigned int bdbar_addr;		/* PCI bus address (32bit) */
 	struct snd_pcm_substream *substream;
 	unsigned int physbuf;			/* physical address (32bit) */
@@ -395,7 +395,7 @@ static unsigned short snd_intel8x0m_codec_read(struct snd_ac97 *ac97,
 static void snd_intel8x0m_setup_periods(struct intel8x0m *chip, struct ichdev *ichdev)
 {
 	int idx;
-	u32 *bdbar = ichdev->bdbar;
+	__le32 *bdbar = ichdev->bdbar;
 	unsigned long port = ichdev->reg_offset;
 
 	iputdword(chip, port + ICH_REG_OFF_BDBAR, ichdev->bdbar_addr);
@@ -1217,7 +1217,7 @@ static int snd_intel8x0m_create(struct snd_card *card,
 	int_sta_masks = 0;
 	for (i = 0; i < chip->bdbars_count; i++) {
 		ichdev = &chip->ichd[i];
-		ichdev->bdbar = ((u32 *)chip->bdbars.area) + (i * ICH_MAX_FRAGS * 2);
+		ichdev->bdbar = ((__le32 *)chip->bdbars.area) + (i * ICH_MAX_FRAGS * 2);
 		ichdev->bdbar_addr = chip->bdbars.addr + (i * sizeof(u32) * ICH_MAX_FRAGS * 2);
 		int_sta_masks |= ichdev->int_sta_mask;
 	}