Gracefuly return on detecting wrong AAC format from corrupted files

Return BAD_VALUE error upon detection of wrongly formatted files.
The client should abort the initialization upon error detection.

The current CHECK() interrupts the configurecodec() preventing a graceful
exit.

Change-Id: Ic79313fa76a63284897df5d91635de87d06f3100
Signed-off-by: Gilles-Arnaud Bleu-Laine <gilles@ti.com>