[PATCH] i386: cpu_detect extraction

Both lhype and Xen want to call the core of the x86 cpu detect code before
calling start_kernel.

(extracted from larger patch)

AK: folded in start_kernel header patch

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
diff --git a/include/linux/start_kernel.h b/include/linux/start_kernel.h
new file mode 100644
index 0000000..d3e5f27
--- /dev/null
+++ b/include/linux/start_kernel.h
@@ -0,0 +1,12 @@
+#ifndef _LINUX_START_KERNEL_H
+#define _LINUX_START_KERNEL_H
+
+#include <linux/linkage.h>
+#include <linux/init.h>
+
+/* Define the prototype for start_kernel here, rather than cluttering
+   up something else. */
+
+extern asmlinkage void __init start_kernel(void);
+
+#endif /* _LINUX_START_KERNEL_H */