[ALSA] Fix build error without CONFIG_HAS_DMA

The recent change of include/asm-generic/dma-mapping-broken.h breaks
the build without CONFIG_HAS_DMA.  This patch is an ad hoc fix.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

sound/core/Makefile

@@ -14,7 +14,8 @@ endif
 snd-pcm-objs := pcm.o pcm_native.o pcm_lib.o pcm_timer.o pcm_misc.o \
 		pcm_memory.o
 
-snd-page-alloc-objs := memalloc.o sgbuf.o
+snd-page-alloc-y := memalloc.o
+snd-page-alloc-$(CONFIG_HAS_DMA) += sgbuf.o
 
 snd-rawmidi-objs  := rawmidi.o
 snd-timer-objs    := timer.o

sound/core/memalloc.c

@@ -206,6 +206,7 @@ void snd_free_pages(void *ptr, size_t size)
  *
  */
 
+#ifdef CONFIG_HAS_DMA
 /* allocate the coherent DMA pages */
 static void *snd_malloc_dev_pages(struct device *dev, size_t size, dma_addr_t *dma)
 {
@@ -239,6 +240,7 @@ static void snd_free_dev_pages(struct device *dev, size_t size, void *ptr,
 	dec_snd_pages(pg);
 	dma_free_coherent(dev, PAGE_SIZE << pg, ptr, dma);
 }
+#endif /* CONFIG_HAS_DMA */
 
 #ifdef CONFIG_SBUS
 
@@ -312,12 +314,14 @@ int snd_dma_alloc_pages(int type, struct device *device, size_t size,
 		dmab->area = snd_malloc_sbus_pages(device, size, &dmab->addr);
 		break;
 #endif
+#ifdef CONFIG_HAS_DMA
 	case SNDRV_DMA_TYPE_DEV:
 		dmab->area = snd_malloc_dev_pages(device, size, &dmab->addr);
 		break;
 	case SNDRV_DMA_TYPE_DEV_SG:
 		snd_malloc_sgbuf_pages(device, size, dmab, NULL);
 		break;
+#endif
 	default:
 		printk(KERN_ERR "snd-malloc: invalid device type %d\n", type);
 		dmab->area = NULL;
@@ -383,12 +387,14 @@ void snd_dma_free_pages(struct snd_dma_buffer *dmab)
 		snd_free_sbus_pages(dmab->dev.dev, dmab->bytes, dmab->area, dmab->addr);
 		break;
 #endif
+#ifdef CONFIG_HAS_DMA
 	case SNDRV_DMA_TYPE_DEV:
 		snd_free_dev_pages(dmab->dev.dev, dmab->bytes, dmab->area, dmab->addr);
 		break;
 	case SNDRV_DMA_TYPE_DEV_SG:
 		snd_free_sgbuf_pages(dmab);
 		break;
+#endif
 	default:
 		printk(KERN_ERR "snd-malloc: invalid device type %d\n", dmab->dev.type);
 	}