esp_coex_preference_set() function

@deprecated Use esp_coex_status_bit_set() and esp_coex_status_bit_clear() instead. Set coexist preference of performance For example, if prefer to bluetooth, then it will make A2DP(play audio via classic bt) more smooth while wifi is running something. If prefer to wifi, it will do similar things as prefer to bluetooth. Default, it prefer to balance.