msm: audio: qdsp6v2: Set end of frame flag to avoid aac multiseek issue

- During aac playback, multiple seek lead to target freeze.
- DSP starts decoding when internal buffer size maximum is
  reached, hence, if there are corrupted frames in that buffer,
  the entire set will not be decoded. This results in target freeze.
- Fix is to set the end of frame flag in the buffers that
  are sent to DSP for decoding.

(cherry picked from commit 08508ac42fed7b1e3a7a9b7e098dfb4ceff8b836)

Signed-off-by: Swaminathan Sathappan <Swami@codeaurora.org>

Change-Id: Ic34272222dcb1df42d7e2fe5d028d513b8cf452f
Signed-off-by: Neha Pandey <nehap@codeaurora.org>