factor, this also shrinks the size of the
kernel image a bit:

arch/x86/kernel/es7000_32.o:

   text	   data	    bss	    dec	    hex	filename
   2813	    192	     44	   3049	    be9	es7000_32.o.before
   2693	    192	     44	   2929	    b71	es7000_32.o.after

Signed-off-by: Ingo Molnar <mingo@elte.hu>
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