fix two warnings on mm/percpu.c

fix those two warnings:

mm/percpu.c: In function a??pcpu_embed_first_chunka??:
mm/percpu.c:1873: warning: comparison of distinct pointer types lacks a cast mm/percpu.c:1879: warning: format a??%lxa?? expects type a??long unsigned inta??, but argument 2 has type a??size_t

---
 mm/percpu.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

index 4a048ab..fc0fc6a 100644
@@ -1817,7 +1817,8 @@ int __init pcpu_embed_first_chunk(size_t reserved_size, ssize_t dyn_size,
 	void *base = (void *)ULONG_MAX;
 	void **areas = NULL;
 	struct pcpu_alloc_info *ai;
-	size_t size_sum, areas_size, max_distance;
+	size_t size_sum, areas_size;
+	unsigned long max_distance;
 	int group, i, rc;
 
 	ai = pcpu_build_alloc_info(reserved_size, dyn_size, atom_size,

1.6.3.3

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It is fixed:

http://patchwork.kernel.org/patch/51565/

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