The OMAP2 plus defconfig lists the LIS3LC02D MISC driver
but there is nowadays a proper IIO driver for this accelerometer.
Switch the config to the new driver.

The IIO software triggers are helpful when using these devices
without a dedicated IRQ line, so activate those too.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>