module/lsm: Have apparmor module parameters work with no args

The apparmor module parameters for param_ops_aabool and
param_ops_aalockpolicy are both based off of the param_ops_bool,
and can handle a NULL value passed in as val. Have it enable the
new KERNEL_PARAM_FL_NOARGS flag to allow the parameters to be set
without having to state "=y" or "=1".

Cc: John Johansen <john.johansen@canonical.com>
Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>

security/apparmor/lsm.c

@@ -666,6 +666,7 @@ static int param_set_aabool(const char *val, const struct kernel_param *kp);
 static int param_get_aabool(char *buffer, const struct kernel_param *kp);
 #define param_check_aabool param_check_bool
 static struct kernel_param_ops param_ops_aabool = {
+	.flags = KERNEL_PARAM_FL_NOARG,
 	.set = param_set_aabool,
 	.get = param_get_aabool
 };
@@ -682,6 +683,7 @@ static int param_set_aalockpolicy(const char *val, const struct kernel_param *kp
 static int param_get_aalockpolicy(char *buffer, const struct kernel_param *kp);
 #define param_check_aalockpolicy param_check_bool
 static struct kernel_param_ops param_ops_aalockpolicy = {
+	.flags = KERNEL_PARAM_FL_NOARG,
 	.set = param_set_aalockpolicy,
 	.get = param_get_aalockpolicy
 };