Migrate IUsb to AIDL

This change migrates android.hardware.usb.IUsb to AIDL and
adds the default implementation.

Compared to the HIDL interface, AIDL based interface adds
transactionId argument to each of the interface method which
is used while invoking the corresponding callback.

Bug: 200993386
Bug: 199357330
Test: Ran new hal implementation on Pixel. Yet to run VTS.
Change-Id: Id8aa40682d4c4b435c63b3ae249b176276dbb31d
diff --git a/usb/aidl/conversion.log b/usb/aidl/conversion.log
new file mode 100644
index 0000000..c090446
--- /dev/null
+++ b/usb/aidl/conversion.log
@@ -0,0 +1,11 @@
+Notes relating to hidl2aidl conversion of android.hardware.usb@1.3 to android.hardware.usb (if any) follow:
+Unhandled comments from android.hardware.usb@1.1::types follow. Consider using hidl-lint to locate these and fixup as many as possible.
+ // NOTE: suffix '_1_1' is for legacy ABI compatibility. It cannot be
+ // changed to 'PortMode' which the convention dictates.
+ // NOTE: suffix '_1_1' is for legacy ABI compatibility. It cannot be
+ // changed to 'PortStatus' which the convention dictates.
+
+An unknown named type was found in translation: android.hardware.usb@1.0::PortStatus
+An unknown named type was found in translation: android.hardware.usb@1.0::PortStatus
+An unknown named type was found in translation: android.hardware.usb@1.0::PortStatus
+END OF LOG