entry: Fix ifndef around arch_xfer_to_guest_mode_handle_work() stub

The stub implementation of arch_xfer_to_guest_mode_handle_work() is
guarded by an #ifndef that incorrectly checks for the name
arch_xfer_to_guest_mode_work instead. It seems the function was renamed
to add "_handle" as a late change to the original patch, and the #ifndef
wasn't updated to go with it.

Change the #ifndef to match the name of the function. No users right now,
so no need to update any architecture code.

Fixes: 935ace2fb5cc4 ("entry: Provide infrastructure for work before transitioning to guest mode")
Signed-off-by: Andrew Donnellan <[e-mail]>
Signed-off-by: Thomas Gleixner <[e-mail]>
Link: https://patch.msgid.link/[e-mail]

include/linux/entry-virt.h

···
  */
 static inline int arch_xfer_to_guest_mode_handle_work(unsigned long ti_work);
 
-#ifndef arch_xfer_to_guest_mode_work
+#ifndef arch_xfer_to_guest_mode_handle_work
 static inline int arch_xfer_to_guest_mode_handle_work(unsigned long ti_work)
 {
 	return 0;