mecha: add back soundimage files to make htc acoustic happier

  * a few it complains are missing still but not in ICS OTA or previous tree

Change-Id: I2c0606f0627a9c57d448d0ddb8b7a7bf9ea3adaf
mecha: update bcm4329 firmware

  * BCM4329B1_002.002.023.0589.0632.hcd from ICS OTA

Change-Id: If894e80de4361dfd8760e0af40c38e615039a5af