lib/powerpc: addrmap_phys_to_virt() should return a pointer

addrmap_phys_to_virt() converts a physical address (phys_addr_t) to a
virtual address, so it should return a pointer instead of an unsigned long.
Its counterpart, addrmap_virt_to_phys(), takes a pointer, so now they're
orthogonal.

The only caller of addrmap_phys_to_virt() converts the return value to
a pointer anyway.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
diff --git a/include/addr_map.h b/include/addr_map.h
index d55f5f6..dda4d6e 100644
--- a/include/addr_map.h
+++ b/include/addr_map.h
@@ -22,7 +22,7 @@
 #include <asm/types.h>
 
 extern phys_addr_t addrmap_virt_to_phys(void *vaddr);
-extern unsigned long addrmap_phys_to_virt(phys_addr_t paddr);
+extern void *addrmap_phys_to_virt(phys_addr_t paddr);
 extern void addrmap_set_entry(unsigned long vaddr, phys_addr_t paddr,
 				phys_size_t size, int idx);