cx88-video build fix

alpha:

drivers/media/video/cx88/cx88-video.c: In function 'cx8800_initdev':
drivers/media/video/cx88/cx88-video.c:1782: error: 'DMA_32BIT_MASK' undeclared (first use in this function)
drivers/media/video/cx88/cx88-video.c:1782: error: (Each undeclared identifier is reported only once
drivers/media/video/cx88/cx88-video.c:1782: error: for each function it appears in.)

Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/media/video/cx88/cx88-alsa.c

@@ -27,6 +27,8 @@
 #include <linux/init.h>
 #include <linux/device.h>
 #include <linux/interrupt.h>
+#include <linux/dma-mapping.h>
+
 #include <asm/delay.h>
 #include <sound/driver.h>
 #include <sound/core.h>

drivers/media/video/cx88/cx88-mpeg.c

@@ -26,6 +26,7 @@
 #include <linux/moduleparam.h>
 #include <linux/init.h>
 #include <linux/device.h>
+#include <linux/dma-mapping.h>
 #include <linux/interrupt.h>
 #include <asm/delay.h>
 

drivers/media/video/cx88/cx88-video.c

-
 /*
  *
  * device driver for Conexant 2388x based TV cards
@@ -34,6 +33,7 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/interrupt.h>
+#include <linux/dma-mapping.h>
 #include <linux/delay.h>
 #include <linux/kthread.h>
 #include <asm/div64.h>