ANDROID: GKI: rockchip: Enable symbols for devfreq

Functions changes summary: 0 Removed, 0 Changed, 6 Added functions
Variables changes summary: 0 Removed, 0 Changed, 0 Added variable

6 Added functions:

  [A] 'function int devfreq_event_disable_edev(devfreq_event_dev*)'
  [A] 'function int devfreq_event_enable_edev(devfreq_event_dev*)'
  [A] 'function devfreq_event_dev* devfreq_event_get_edev_by_phandle(device*, const char*, int)'
  [A] 'function int devfreq_event_get_edev_count(device*, const char*)'
  [A] 'function devfreq_event_dev* devm_devfreq_event_add_edev(device*, devfreq_event_desc*)'
  [A] 'function int down_write_trylock(rw_semaphore*)'

Bug: 194515348
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: If4ca65ee44b961827f289a02a7458370a81e9154