ARM: msm: Clean up sensor ADSP driver; OCMEM is no longer used

OCMEM is no longer used, hence, removing OCMEM related code from the
ADSP driver.

Change-Id: I2657923d02c462380c8d57a47493d93f073a566a
Acked-by: Kevin Smith <smithk@qti.qualcomm.com>
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>