DO NOT MERGE : Add simple control request handling

Control request handling was already added in master,
but it is causing a few problems on Windows. This patch
simplifies the main patch and only responds to get
status requests with STATUS_OK. This fixes situations
where Windows stops communicating if it doesn't get a
response from this request.

Bug: 65423303
Test: Transfer files on windows
Change-Id: Ib7a53aa5b679f011b3a8ac6dff549ca051d579e0
diff --git a/media/mtp/mtp.h b/media/mtp/mtp.h
index 13cc859..1c7829d 100644
--- a/media/mtp/mtp.h
+++ b/media/mtp/mtp.h
@@ -494,4 +494,10 @@
 #define MTP_ASSOCIATION_TYPE_UNDEFINED              0x0000
 #define MTP_ASSOCIATION_TYPE_GENERIC_FOLDER         0x0001
 
+// MTP class reqeusts
+#define MTP_REQ_CANCEL              0x64
+#define MTP_REQ_GET_EXT_EVENT_DATA  0x65
+#define MTP_REQ_RESET               0x66
+#define MTP_REQ_GET_DEVICE_STATUS   0x67
+
 #endif // _MTP_H