x86: move trampoline arrays extern definition to smp.h

In here, they can serve both architectures

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/asm-x86/smp.h b/include/asm-x86/smp.h
index 27d9f65..b2a1697 100644
--- a/include/asm-x86/smp.h
+++ b/include/asm-x86/smp.h
@@ -9,6 +9,12 @@
 extern int smp_num_siblings;
 extern unsigned int num_processors;
 
+/*
+ * Trampoline 80x86 program as an array.
+ */
+extern const unsigned char trampoline_data [];
+extern const unsigned char trampoline_end  [];
+
 struct smp_ops {
 	void (*smp_prepare_boot_cpu)(void);
 	void (*smp_prepare_cpus)(unsigned max_cpus);