[PATCH] Fix up dma_alloc_coherent with 64bit DMA masks on i386.

Cset 1.808 in 2.4 never got propagated forward to 2.5

It's pretty much the same fix as below (s/!=/</), but with the following
changes
 - This was a patch to pci_alloc_consistant(), which now wants to be
   dma_alloc_coherent()
 - Removal of the u32 cast

arch/i386/kernel/pci-dma.c

@@ -19,7 +19,7 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
 	void *ret;
 	int gfp = GFP_ATOMIC;
 
-	if (dev == NULL || ((u32)*dev->dma_mask != 0xffffffff))
+	if (dev == NULL || (*dev->dma_mask < 0xffffffff))
 		gfp |= GFP_DMA;
 	ret = (void *)__get_free_pages(gfp, get_order(size));