Merge "Allow implicit conversions for NN errors -- hal" am: 68e98f40dc am: d236dbf3b3 am: 36c599d513 am: 0e0dc63cff am: 2542d951d0

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1859936

Change-Id: I2d5d614f17b8762d2523dde714ae5f6a38adf2a2