UBUNTU: SAUCE: binder: turn into module

The Android binder driver needs to become a module for the sake of shipping
Anbox. To do this we need to export the following functions since binder is
currently still using them:

- security_binder_set_context_mgr()
- security_binder_transaction()
- security_binder_transfer_binder()
- security_binder_transfer_file()
- can_nice()
- __close_fd_get_file()
- mmput_async()
- task_work_add()
- map_kernel_range_noflush()
- get_vm_area()
- zap_page_range_single()
- put_ipc_ns()
- get_ipc_ns_exported()
- show_init_ipc_ns()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
[ saf: fix additional reference to init_ipc_ns from 5.0-rc6 ]
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
[ arighi: fix EXPORT_SYMBOL vs EXPORT_SYMBOL_GPL change from 6.0-rc5 ]
[ arighi: zap_page_range() has been dropped, export zap_page_range_single() in 6.3 ]
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>

kernel/sched/core.c

@@ -7328,6 +7328,7 @@ int can_nice(const struct task_struct *p, const int nice)
 {
 	return is_nice_reduction(p, nice) || capable(CAP_SYS_NICE);
 }
+EXPORT_SYMBOL(can_nice);
 
 #ifdef __ARCH_WANT_SYS_NICE