In dfs test mode, bandwidth detection test on dfs channel fails
with QCN7605 chip, reason is some pulses will be discarded due to
low rssi reported on some frequency channel, it's different halphy
design for QCN7605 chip, so need to define rp_rssithresh for QCN7605
chip to different value.
Fix is define rp_rssithresh for QCN7605 chip to different value for
FCC/ETSI/JP W56 table which are used for dfs certification.
Change-Id: I9132cf82e6d8d97f83ebb4cd8586f8d8ff48066e
CRs-Fixed: 2986947
77f09f7272