[PATCH] 440GX AGP update

I don't have a 440GX to test here, but I think the patch below is likely
to fix the problem.

I see some other issues in intel-agp.c.  I'll send those separately since
the diff is a little larger and should affect only i810 and i830.

drivers/char/agp/generic.c

@@ -157,7 +157,7 @@ agp_memory *agp_allocate_memory(size_t page_count, u32 type)
 			agp_free_memory(new);
 			return NULL;
 		}
-		new->memory[i] = virt_to_phys((void *) new->memory[i]);
+		new->memory[i] = virt_to_phys(addr);
 		new->page_count++;
 	}