Merge "floss: sysprop: Use CString for easier conversion" into main am: f0000f48 am: 1a5488fc

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/3022226



Change-Id: Ia5ff5f93fb1d2e5af18916380fb9a08e1a8ce9c5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>