mm_init.c: avoid ifdef-inside-macro-expansion

gcc-3.2:

  mm/mm_init.c:77:1: directives may not be used inside a macro argument
  mm/mm_init.c:76:47: unterminated argument list invoking macro "mminit_dprintk"
  mm/mm_init.c: In function `mminit_verify_pageflags_layout':
  mm/mm_init.c:80: `mminit_dprintk' undeclared (first use in this function)
  mm/mm_init.c:80: (Each undeclared identifier is reported only once
  mm/mm_init.c:80: for each function it appears in.)
  mm/mm_init.c:80: syntax error before numeric constant

Also fix a typo in a comment.
Reported-by: NAdrian Bunk <bunk@kernel.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

mm/mm_init.c

@@ -14,6 +14,10 @@
 #ifdef CONFIG_DEBUG_MEMORY_INIT
 int __meminitdata mminit_loglevel;
 
+#ifndef SECTIONS_SHIFT
+#define SECTIONS_SHIFT	0
+#endif
+
 /* The zonelists are simply reported, validation is manual. */
 void mminit_verify_zonelist(void)
 {
@@ -74,11 +78,7 @@ void __init mminit_verify_pageflags_layout(void)
 		NR_PAGEFLAGS);
 	mminit_dprintk(MMINIT_TRACE, "pageflags_layout_shifts",
 		"Section %d Node %d Zone %d\n",
-#ifdef SECTIONS_SHIFT
 		SECTIONS_SHIFT,
-#else
-		0,
-#endif
 		NODES_SHIFT,
 		ZONES_SHIFT);
 	mminit_dprintk(MMINIT_TRACE, "pageflags_layout_offsets",