lib/lcm.c: replace include

We don't need all the stuff kernel.h pulls in; just compiler.h since
export.h doesn't do necessary #includes.  This removes more than 100
dependencies.
Signed-off-by: NRasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

lib/lcm.c

-#include <linux/kernel.h>
+#include <linux/compiler.h>
 #include <linux/gcd.h>
 #include <linux/export.h>
 #include <linux/lcm.h>