fix the following checkpatch.pl warning:
WARNING: unnecessary cast may hide bugs,
see http://c-faq.com/malloc/mallocnocast.html
596: FILE: linux/drivers/media/dvb/siano/smscoreapi.c:540:
+	msg = (struct SmsMsgHdr_ST *) kmalloc(PAGE_SIZE, GFP_KERNEL | GFP_DMA);
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
        }
 
        /* PAGE_SIZE buffer shall be enough and dma aligned */
-       msg = (struct SmsMsgHdr_ST *) kmalloc(PAGE_SIZE, GFP_KERNEL | GFP_DMA);
+       msg = kmalloc(PAGE_SIZE, GFP_KERNEL | GFP_DMA);
        if (!msg)
                return -ENOMEM;