livepatch: apply_alternatives() is only used for livepatch

Guard it with CONFIG_LIVEPATCH.  Note alternatives are applied at boot
using _apply_alternatives().

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Julien Grall <jgrall@amazon.com>

xen/arch/arm/alternative.c

@@ -223,6 +223,7 @@ void __init apply_alternatives_all(void)
     vunmap(xenmap);
 }
 
+#ifdef CONFIG_LIVEPATCH
 int apply_alternatives(const struct alt_instr *start, const struct alt_instr *end)
 {
     const struct alt_region region = {
@@ -232,6 +233,7 @@ int apply_alternatives(const struct alt_instr *start, const struct alt_instr *en
 
     return __apply_alternatives(&region, 0);
 }
+#endif
 
 /*
  * Local variables:

xen/arch/x86/alternative.c

@@ -358,11 +358,12 @@ static void init_or_livepatch _apply_alternatives(struct alt_instr *start,
     }
 }
 
-void init_or_livepatch apply_alternatives(struct alt_instr *start,
-                                          struct alt_instr *end)
+#ifdef CONFIG_LIVEPATCH
+void apply_alternatives(struct alt_instr *start, struct alt_instr *end)
 {
     _apply_alternatives(start, end, true);
 }
+#endif
 
 static unsigned int __initdata alt_todo;
 static unsigned int __initdata alt_done;