qcacld-3.0: Limit ROC for listen to max 600 if GO present

Add fixed 300ms extra ROC time instead of multiplying the
ROC duration by 6 as this causes the ROC to be upto 1.5 secs
if GO is present. Firmware will advertize NOA of 1.5 secs
and if supplicant cancels ROC after 200 or 300ms then
firmware cannot cancel NOA. So when supplicant sends next
ROC it will be delayed as firmware already is running previous
NOA which may cause p2p find issues if GO is present.

Fix this by capping the max ROC time to 600ms when GO is present.

Change-Id: I0774b06ff4db1fae7efc387388fdf3059505150e
CRs-Fixed: 3025870