x86/entry: Make enter_from_user_mode() static

The ASM users are gone. All callers are local.

Signed-off-by: Thomas Gleixner <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Acked-by: Andy Lutomirski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

arch/x86/entry/common.c

@@ -56,7 +56,7 @@
  * 2) Invoke context tracking if enabled to reactivate RCU
  * 3) Trace interrupts off state
  */
-__visible noinstr void enter_from_user_mode(void)
+static noinstr void enter_from_user_mode(void)
 {
 	enum ctx_state state = ct_state();