qcacmn: Fix compilation with scheduled scan start delay

cfg80211_sched_scan_request start delay is added from
KERNEL_VERSION 4.4, and schedule scan plans is backported but
not the start delay.

This change is to make sure start delay accessed from request
only for KERNEL_VERSION 4.4 to avoid compilation issues with
CFG80211_MULTI_SCAN_PLAN_BACKPORT.

Change-Id: I3469ef457bb1f97fdddfb7491fbcaa2e64a16e8a
CRs-Fixed: 2038458
1 file changed