Camera: QCOM legacy definitions,HTC cam switch,NO_UPDATE_PREVIEW

Updating Camera parameters, and service with several
compatibility patches:

1., QCOM legacy CameraParameters and functions:
Adding these will make ICS qcomm camera blobs work on JB 4.2.
Use BOARD_USES_QCOM_LEGACY_CAM_PARAMS := true in BoardConfig
to use this.

Also fixes the problem of legacy qcom
camera blobs with recent libcameraservice QCOM_HARDWARE changes,
where the orientation is messed up on first
preview: the fix is leaving out setPreviewWindow(window) for
legacy qcomm cam blobs.

2., Also adding NO_UPDATE_PREVIEW flag for legacy purposes.

3., Adding adding the set orientation patch:
Always set buffers orientation when setting the qcom camera preview window
Fixes the rotated preview on TouchPad
https://github.com/CyanogenMod/android_frameworks_base/commit/1a8e41a3c7434737db89b604352575f8b3109e7a

4., camera: Full support for HTC camera switch

5., Adding more parameters for HTC Explorer

Change-Id: I2bfc72b8ef027665356788f1db7f96b31d037dbe
Camera parameters for Samsung's qcom based legacy devices

Change-Id: I8f84e06771338d992521e69704d21cd113201b4b
Revert "audioflinger: apply volume on direct track when track is active"

Causes issues with MortPlayer (LPA).  Track starts/resumes playing, but volume is forced to zero, until a track-change occurs.

4-17 21:41:51.492 D/ALSADevice(  256): setHardwareParams: reqBuffSize 262144 channels 2 sampleRate 44100
04-17 21:41:51.492 D/ALSADevice(  256): setHardwareParams: buffer_size 1048576, period_size 262144, period_cnt 4
04-17 21:41:51.492 W/AudioFlinger(  256): There was no effectChain created for the sessionId(283)
04-17 21:41:51.512 E/AudioFlinger(  256): setting observer mOutputDesc track 0x40c598a0, obv 0x40c598b0
04-17 21:41:51.512 D/AudioSessionOutALSA(  256): setLpaVolume(0)
04-17 21:41:51.512 D/AudioSessionOutALSA(  256): Setting LPA volume to 0 (available range is 0 to 100)
04-17 21:41:51.512 D/ALSADevice(  256): setMixerControl:: name LPA RX Volume value 0 index 0
04-17 21:41:51.512 D/AudioSessionOutALSA(  256): setLpaVolume(0)
04-17 21:41:51.512 D/AudioSessionOutALSA(  256): Setting LPA volume to 0 (available range is 0 to 100)

Change-Id: I6e0ee8cd7c2f577ca5b4cb834c7a83703db4b167