AP152 image Dual bands not working - Only 2.4 GHz working


I have built an image for the Qualcomm ap152 board, which is a dual-band board, but the image provides support only for a single band 2.4 GHz. The openwrt version used was 18.06.

Please let me know, how to get the 5GHz band also workign on the board, do I have add additional drivers.