[ALSA] use the ALIGN macro

Use the ALIGN macro instead of manual calculations.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/pci/bt87x.c b/sound/pci/bt87x.c
index d33a370..05e0091 100644
--- a/sound/pci/bt87x.c
+++ b/sound/pci/bt87x.c
@@ -699,7 +699,7 @@
 						     SNDRV_DMA_TYPE_DEV_SG,
 						     snd_dma_pci_data(chip->pci),
 							128 * 1024,
-							(255 * 4092 + 1023) & ~1023);
+							ALIGN(255 * 4092, 1024));
 }
 
 static int __devinit snd_bt87x_create(struct snd_card *card,