In pmap_mapdev we correctly round the address off to the nearest page

boundary, but we must also add the offset back on to the va we return.

sys/arm/arm/pmap.c

@@ -4474,7 +4474,7 @@ pmap_mapdev(vm_offset_t pa, vm_size_t size)
 		pa += PAGE_SIZE;
 	}
 	
-	return ((void *)(va));
+	return ((void *)(va + offset));
 }
 
 #define BOOTSTRAP_DEBUG