P2P: Include operating class 124 (channels 149,153,157,161)

P2P: Include operating class 124 (channels 149,153,157,161)

When using the p2p_oper_reg_class configuration option instead of
p2p_group_add freq parameter, the operating class 124 was not
processed correctly. Include that class in the list of 5 GHz classes
for the p2p_oper_reg_class to resolve this.