[PATCH 4.17 21/97] x86/irqflags: Provide a declaration for native_save_fl

4.17-stable review patch. If anyone has any objections, please let me know. -- From: Nick Desaulniers commit 208cbb32558907f68b3b2a081ca2337ac3744794 upstream. It was reported that the commit d0a8d9378d16 is causing users of gcc < 4.9 to observe -Werror=missing-prototypes

[PATCH 4.17 21/97] x86/irqflags: Provide a declaration for native_save_fl

4.17-stable review patch. If anyone has any objections, please let me know. -- From: Nick Desaulniers commit 208cbb32558907f68b3b2a081ca2337ac3744794 upstream. It was reported that the commit d0a8d9378d16 is causing users of gcc < 4.9 to observe -Werror=missing-prototypes