loader: use os apis for interacting with process memory

libraries/libstratosphere/include/stratosphere/os.hpp

@@ -25,6 +25,7 @@
 #include <stratosphere/os/os_virtual_address_memory.hpp>
 #include <stratosphere/os/os_native_handle.hpp>
 #include <stratosphere/os/os_process_handle_api.hpp>
+#include <stratosphere/os/os_process_memory_api.hpp>
 #include <stratosphere/os/os_random.hpp>
 #include <stratosphere/os/os_mutex.hpp>
 #include <stratosphere/os/os_condition_variable.hpp>