kxcjk-1013
iio:kxcjk-1013: Add support for SMO8500 device

The Onda v975w tablet contains an accelerometer that's advertised over
ACPI as SMO8500. This device is however a KXCJ9 accelerometer as
can be seen in the Windows driver's INF file.
iio:kxcjk-1013: Lower failure to get an interrupt to info

As the device in the Onda v975w doesn't have a GPIO pin to tell us that
data changed, and needlessly throws an error.