Add 1.2 NN HAL: IPreparedModel & callbacks.

Create 1.2 version IPreparedModel, IPreparedModelCallback, and
IExecutionCallback.

Currently the new interfaces are created the same as 1.0 version,
but will have more methods introduced in later CLs.

Bug: 73506513
Test: VtsHalNeuralnetworksV1_xTargetTest with 1.2 sample driver
Change-Id: Icf4d04c22f88e825d87562f1489377fdf6bf585d
Merged-In: Icf4d04c22f88e825d87562f1489377fdf6bf585d
(cherry picked from commit b5cb8f76321f2217c47e9183506c94dfa5627dbf)
diff --git a/neuralnetworks/1.2/Android.bp b/neuralnetworks/1.2/Android.bp
index e155bbd..528a2c7 100644
--- a/neuralnetworks/1.2/Android.bp
+++ b/neuralnetworks/1.2/Android.bp
@@ -9,6 +9,9 @@
     srcs: [
         "types.hal",
         "IDevice.hal",
+        "IExecutionCallback.hal",
+        "IPreparedModel.hal",
+        "IPreparedModelCallback.hal",
     ],
     interfaces: [
         "android.hardware.neuralnetworks@1.0",