pointercal-xinput: Add pointercal.xinput to imx28evk

This is being add here as an intering solution while OE-Core does not
have full XInput support.

Change-Id: I7d0553c70ced46febe2819b457e25a7749f17c71
Signed-off-by: Daiane Angolini <daiane.angolini@freescale.com>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>