Proximity Sensor/Light Sensor: Capella CM3602 per sensors.mahimahi.so in Nexus One ROM Dump.
Accelerometer: BMA150 3-axis Accelerometer per sensors.mahimahi.so in Nexus One ROM Dump.
Magnetic Compass: AK8973 3-axis Magnetic field sensor/AK8973 Orientation sensor per sensors.mahimahi.so in Nexus One ROM Dump.
Wifi Radio / Bluetooth / FM: BCM4329 in lib/modules
In libaudio.so I found “Routing audio to Speakerphone with back mic” reference.
In libaudio.so I found “Stereo FM speaker” also referenced.
Audience A1026 Noise Canceling Chip – No link but here is the A1024 found in libaudio.so
Qualcomm QSD8K Specific hardware libs in lib/hw (QSD8250 Probably)
Adreno 200 Graphics Core with OpenGLES 2.0 – Part of Snapdragon?
Camera Info Vague, found some references to auto focus, flash, white balance and anti-banding in libcamera.so