ANDROID: GKI: rockchip: Enable symbols for rockchip-opp

Functions changes summary: 0 Removed, 0 Changed, 3 Added functions
Variables changes summary: 0 Removed, 0 Changed, 0 Added variable

3 Added functions:

  [A] 'function opp_table* dev_pm_opp_set_prop_name(device*, const char*)'
  [A] 'function int devfreq_event_get_event(devfreq_event_dev*, devfreq_event_data*)'
  [A] 'function int devm_devfreq_register_opp_notifier(device*, devfreq*)'

Bug: 194515348
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Id9576d47e09e887a9df4f94a485c8ac4c35ea39e