add Spinel SPI interface support am: 7ae6d6f4ff am: 7e9e8e975c am: 0191fa36cf am: 9c6ef30970 am: 3eabe6b5b9 am: a9f62f2f3d

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2648140

Change-Id: Idd6f8b778b4078f615592e22c178ecb63502a273
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>