ASoC: msm: qdsp6v2: Prevent ASM callback when client freed

Set EOS flag in compress driver for partial drain
and reorder ASM client free function to prevent
callback from being signaled after ASM client is
freed.

Change-Id: Ib68bd3fa175af78d10e02e227563c44e9367f4fe
Signed-off-by: Ben Romberger <bromberg@codeaurora.org>