mm: use pgdat_end_pfn() to simplify the code in arch

Xishi Qiu linux-mm lkml 1 version Sep 5, 2013 New

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#	Subject and files	Size	Replies	Applied
1/2	mm: use pgdat_end_pfn() to simplify the code in arch`arch/ia64/mm/init.c` `arch/metag/mm/init.c` `arch/powerpc/mm/numa.c` +1 more	+4 -7	0 replies
2/2	mm: use pgdat_end_pfn() to simplify the code in others`fs/proc/kcore.c` `mm/bootmem.c` `mm/memory_hotplug.c`	+6 -8	0 replies

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