ARM: 9139/1: kprobes: fix arch_init_kprobes() prototype

With extra warnings enabled, gcc complains about this function
definition:

arch/arm/probes/kprobes/core.c: In function 'arch_init_kprobes':
arch/arm/probes/kprobes/core.c:465:12: warning: old-style function definition [-Wold-style-definition]
  465 | int __init arch_init_kprobes()

Link: https://lore.kernel.org/all/[email protected]/

Fixes: 24ba613 ("ARM kprobes: core code")
Acked-by: Masami Hiramatsu <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
Signed-off-by: Russell King (Oracle) <[email protected]>

Author: arndb

arch/arm/probes/kprobes/core.c

@@ -439,7 +439,7 @@ static struct undef_hook kprobes_arm_break_hook = {
 
 #endif /* !CONFIG_THUMB2_KERNEL */
 
-int __init arch_init_kprobes()
+int __init arch_init_kprobes(void)
 {
 	arm_probes_decode_init();
 #ifdef CONFIG_THUMB2_KERNEL