powerpc/ps3: Use dma_addr_t down through the stack

Push the dma_addr_t type usage all the way down to where the actual
values are manipulated.

Now that u64 is "unsigned long long", this removes warnings like:

arch/powerpc/platforms/ps3/system-bus.c:532: warning: passing argument 4 of 'ps3_dma_map' from incompatible pointer type
arch/powerpc/platforms/ps3/system-bus.c:649: warning: passing argument 4 of 'ps3_dma_map' from incompatible pointer type

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/include/asm/ps3.h b/arch/powerpc/include/asm/ps3.h
index eead5c6..67f1812 100644
--- a/arch/powerpc/include/asm/ps3.h
+++ b/arch/powerpc/include/asm/ps3.h
@@ -103,10 +103,10 @@
 	int (*map)(struct ps3_dma_region *,
 		   unsigned long virt_addr,
 		   unsigned long len,
-		   unsigned long *bus_addr,
+		   dma_addr_t *bus_addr,
 		   u64 iopte_pp);
 	int (*unmap)(struct ps3_dma_region *,
-		     unsigned long bus_addr,
+		     dma_addr_t bus_addr,
 		     unsigned long len);
 };
 /**
@@ -124,9 +124,9 @@
 int ps3_dma_region_create(struct ps3_dma_region *r);
 int ps3_dma_region_free(struct ps3_dma_region *r);
 int ps3_dma_map(struct ps3_dma_region *r, unsigned long virt_addr,
-	unsigned long len, unsigned long *bus_addr,
+	unsigned long len, dma_addr_t *bus_addr,
 	u64 iopte_pp);
-int ps3_dma_unmap(struct ps3_dma_region *r, unsigned long bus_addr,
+int ps3_dma_unmap(struct ps3_dma_region *r, dma_addr_t bus_addr,
 	unsigned long len);
 
 /* mmio routines */