msm_serial_hs:Increase rx buffer size to 1024bytes

Increase the UARTDM rx buffer size from 512 bytes
to 1024 bytes. This patch helps to increase the
rx data rates of the clients that uses serial_hs driver.
CRs-Fixed: 514385

Change-Id: I957b1e47887931047e66da555e73683e7dca49a8
Signed-off-by: Dilip Kota <c_dkota@codeaurora.org>
msm-camera: Fix various small issues in Actuator driver

Bound check and validate userspace parameters direction,
number of steps and direction sign. Also fix possible
memory leak in certain error cases.

Change-Id: I05a3f63583845851df36b122f2079d345657cb99
CRs-Fixed: 511349

Signed-off-by: Katta Santhisindhu <kattas@codeaurora.org>