ANDROID: ABI: Update pixel symbol list

We need to add this new symbol as it was un-inlined in the upstream
commit 91972134 ("iio: Un-inline iio_buffer_enabled()").

1 function symbol(s) added
  'bool iio_buffer_enabled(struct iio_dev *)'

Bug: 308652253
Change-Id: I558a9b5144050690437bca79aa620132b6b5b560
Signed-off-by: Will McVicker <willmcvicker@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>