ANDROID: ABI: Add several iio related symbols

Add several iio related symbols required by st_lsm6dsx.ko

Leaf changes summary: 5 artifacts changed
Changed leaf types summary: 0 leaf type changed
Removed/Changed/Added functions summary: 0 Removed, 0 Changed, 5 Added functions
Removed/Changed/Added variables summary: 0 Removed, 0 Changed, 0 Added variable

5 Added functions:

  [A] 'function int iio_device_claim_direct_mode(iio_dev*)'
  [A] 'function void iio_device_release_direct_mode(iio_dev*)'
  [A] 'function int iio_push_event(iio_dev*, u64, s64)'
  [A] 'function int iio_read_mount_matrix(device*, const char*, iio_mount_matrix*)'
  [A] 'function ssize_t iio_show_mount_matrix(iio_dev*, uintptr_t, const iio_chan_spec*, char*)'

Bug: 194108974
Signed-off-by: Jindong Yue <jindong.yue@nxp.com>
Change-Id: I7f7b78d510f120497f597463e69ce35cb7203417