msm: qdsp6v2: reorganize kernel driver under misc drivers.

This is needed as the drivers are registering under misc driver
but exists under arch/arm/mach

Change-Id: I9cd75901184a4fdff6f796019152bc6e29eed6c3
Signed-off-by: Asish Bhattacharya <asishb@codeaurora.org>