x86, um: ... and asm-x86 move

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

arch/x86/include/asm/idle.h

@@ -0,0 +1,15 @@
+#ifndef ASM_X86__IDLE_H
+#define ASM_X86__IDLE_H
+
+#define IDLE_START 1
+#define IDLE_END 2
+
+struct notifier_block;
+void idle_notifier_register(struct notifier_block *n);
+
+void enter_idle(void);
+void exit_idle(void);
+
+void c1e_remove_cpu(int cpu);
+
+#endif /* ASM_X86__IDLE_H */