qcacld-3.0: target_if: Replace explicit comparison to NULL

Per the Linux Kernel coding style, as enforced by the kernel
checkpatch script, pointers should not be explicitly compared to
NULL. Therefore within target_if replace any such comparisons with
logical operations performed on the pointer itself.

Change-Id: Id9b5185713b91b67ddf1d965a6c7e52508558d82
CRs-Fixed: 2418397
2 files changed