Change the drivers's compatible from atmel,sam-tc to atmel,sam-tc-qdec.
The atmel,sam-tc should be reserved for the future counter driver.
Signed-off-by: Piotr Mienkowski <piotr.mienkowski@gmail.com>
Add simple application to demonstrate quadrature decoder sensor.
Tested on Atmel SMART SAM E70 Xplained board.
Signed-off-by: Piotr Mienkowski <piotr.mienkowski@gmail.com>