stackleak: Use str_enabled_disabled() helper in stack_erasing_sysctl()

Remove hard-coded strings by using the str_enabled_disabled() helper
function.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Link: https://lore.kernel.org/r/20241222223157.135164-2-thorsten.blum@linux.dev
Signed-off-by: Kees Cook <kees@kernel.org>

kernel/stackleak.c

@@ -15,6 +15,7 @@
 
 #ifdef CONFIG_STACKLEAK_RUNTIME_DISABLE
 #include <linux/jump_label.h>
+#include <linux/string_choices.h>
 #include <linux/sysctl.h>
 #include <linux/init.h>
 
@@ -41,7 +42,7 @@ static int stack_erasing_sysctl(const struct ctl_table *table, int write,
 		static_branch_enable(&stack_erasing_bypass);
 
 	pr_warn("stackleak: kernel stack erasing is %s\n",
-					state ? "enabled" : "disabled");
+					str_enabled_disabled(state));
 	return ret;
 }
 static struct ctl_table stackleak_sysctls[] = {