Patches for linphone-sdk submodule to fix build errors:
- metadoc.py: null check for parametername node
- abstractapi.py: change exceptions to warnings for missing annotations
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
When /dev/hidraw* devices are not accessible, liblinphone crashes in
HidDevice::stopPollTimer(). This adds a stub hidapi implementation
that returns empty device lists, preventing the crash while disabling
USB headset button support.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
