Revert "wlan: Fix for ARP offload issue"

This reverts commit 85ba2bc0fc741a663c094ccd84faa3b18d21e292.
Side effects to the hw address (which changes during riva offload)
result in exactly the same final behavior.
msm: camera: Remove unused code used to map userspace buffers.

Remove MSM_CAM_IOCTL_SET_MEM_MAP_INFO IOCTL support, since the
usage of this IOCTL is now depreciated.

Change-Id: I2ca8477fc804a80587bf40dba38904347e9b25aa
Signed-off-by: Kiran Kumar H N <hurlisal@codeaurora.org>