hdd_indicate_mgmt_frame is defined under CONFIG_CNSS feature flag
which is not defined for MSM8998 SNOC target. Fix this compilation
error by taking out definition of hdd_indicate_mgmt_frame from
CONFIG_CNSS feature flag.
Change-Id: I4b2de5d947ff4fdd21032d6b7e3d5fe4e9eb3eec
CRs-Fixed: 978800