linux: Ensure we have buildable kernel recipes for each machine

Fix various kernels to build with our toolchain, this includes well known fixes
for:
* sumversion.c: compilation failing with a 'PATH_MAX' undeclared (fixed by
    adding limits.h to sumversions includes
* a patch taken from oe.dev to stop GCC >= 4.3 from optimizing a loop which
    causes compilation to fail
* Fixing the KERNEL_OUTPUT for mx31 and nokia800 kernel recipes

Signed-off-by: Joshua Lock <josh@linux.intel.com>

meta/packages/linux/files/sumversion-fix.patch

@@ -0,0 +1,16 @@
+Fix compilation of the sumversion "script"
+
+http://bugs.gentoo.org/show_bug.cgi?format=multiple&id=226169
+
+Index: linux-2.6.21/scripts/mod/sumversion.c
+===================================================================
+--- linux-2.6.21.orig/scripts/mod/sumversion.c	2007-04-26 04:08:32.000000000 +0100
++++ linux-2.6.21/scripts/mod/sumversion.c	2010-05-13 14:41:31.777882280 +0100
+@@ -7,6 +7,7 @@
+ #include <ctype.h>
+ #include <errno.h>
+ #include <string.h>
++#include <limits.h>
+ #include "modpost.h"
+ 
+ /*