do_syscall: Delegate system calls to the mcexec with the same pid

This includes the following fix:
send_syscall, do_syscall: remove argument pid

Fujitsu: POSTK_TEMP_FIX_26
Refs: #1165
Change-Id: I702362c07a28f507a5e43dd751949aefa24bc8c0

executer/include/uprotocol.h

@@ -263,6 +263,12 @@ struct terminate_thread_desc {
 	unsigned long tsk; /* struct task_struct * */
 };
 
+struct rpgtable_desc {
+	uintptr_t rpgtable;
+	uintptr_t start;
+	uintptr_t len;
+};
+
 enum perf_ctrl_type {
 	PERF_CTRL_SET,
 	PERF_CTRL_GET,