Update notes for submitted changes

* Build libcamera from source (3/3)
Update notes for submitted changes

* Build libcamera from source (3/3)
Update notes for submitted changes

* Provide prebuilt froyo libcamera.so (TARGET_PREBUILT_LIBCAMERA)
Update notes for submitted changes

* Provide prebuilt froyo libcamera.so (TARGET_PREBUILT_LIBCAMERA)