qcacld-3.0: Fix incorrect type and range for LFR ini

Currently LFR band specific ini attributes 5g_rssi_boost_threshold
and 5g_rssi_penalize_threshold programmed with wrong type and range.
This can lead to ignore user-input and always use default value.

To fix this, correct min and max ini values for 5Ghz network RSSI
boost/penalty preference.

Change-Id: If89c09fb1343a68dfaa7241b5ec14b046d1bb758
CRs-Fixed: 2452128