Currently, function mlme_is_freq_present_in_list calculates
index based on chanel frequency in a loop of num_freq.
But acs_weight array can hold NUM_CHANNELS number of values.
loop index more than NUM_CHANNELS may lead to OOB read issue.
Fix is to add a validation for loop index < NUM_CHANNELS to
avoid any OOB issue.
Change-Id: I3c1d3393cd2a40147c325fea8f76b1db1a51f457
CRs-Fixed: 2727312