Overlay for omap3 camera devices.
audio: Add compatibility bits to use legacy libaudio implementations

Enable with BOARD_USES_AUDIO_LEGACY, requires the use of the generic
legacy audio shim

Change-Id: I60407b48c2a8f3c9736805f31dcdef280c9aa485
libstagefright: fix indefinate loop in QueryCodec

portFormat.nIndex is being incremented which is not
trustworthy since the nIndex value could be overriden
by the OMX Component,  which causes an indefinate loop
which inturn causes a memory leak and crashes the system.

OMX Component on encore and p970 exhibits this behaviour
(OMX.TI.720P.Decoder). This patch prevents stagefright
freezes when QueryCodec is called during Gallery Thumbnail
generation for videos and Adobe Flash playback.

Change-Id: I825c99ddecacbb927e22ac7d1a53facb26d95ff2