Log Message:
Updated  ham/uhd to 3.9.4
-------------------------
## 003.009.004
- GPIO control: Fix address mismatch for RX and full duplex.
  This fixes full-duplex mode for most devices.
- B200: Fixed auto rate selection (can now select 61.44 Msps)
- UBX: Fix member declaration order which could cause
  segfaults for debug builds
- Manual/Docs: Numerous fixes, use dot for graphs in manual
- Utils: multiple fixes for query_gpsdo_sensors, fixed floating point
  comparison
- Windows: Include registry file in installation
- Converters: Improve NEON converters