linux-user: Move cpu_copy() to user-internals.h

We only use cpu_copy() inside linux-user, so we don't need to have
the prototype in qemu.h available to code outside linux-user; move it
to user-internals.h.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Helge Deller <deller@gmx.de>
Signed-off-by: Helge Deller <deller@gmx.de>

linux-user/qemu.h

@@ -368,7 +368,4 @@ void *lock_user_string(abi_ulong guest_addr);
 #define unlock_user_struct(host_ptr, guest_addr, copy)		\
     unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
 
-/* Clone cpu state */
-CPUArchState *cpu_copy(CPUArchState *env);
-
 #endif /* QEMU_H */

linux-user/user-internals.h

@@ -209,6 +209,9 @@ static inline void begin_parallel_context(CPUState *cs)
  */
 void init_main_thread(CPUState *cs, struct image_info *info);
 
+/* Clone cpu state */
+CPUArchState *cpu_copy(CPUArchState *env);
+
 /*
  * Include target-specific struct and function definitions;
  * they may need access to the target-independent structures