Revert "trying to fix imx6q-cm-fx6.dts", will re-add it later

This reverts commit 2505ec94bd7a4bef1acc9e12b83547018aa9045e.
ARM: i.MX6: dts: refactoring of the cm-fx6 device tree files.

Refactoring device tree files:
1) Utilite:
+ imx6q.dtsi
+ imx6q-sb-fx6x.dtsi
+ imx6q-sb-fx6m.dtsi
+ imx6q-cm-fx6.dtsi
= imx6q-sbc-fx6m.dts

2) CM-FX6-EVAL:
+ imx6q.dtsi
+ imx6q-sb-fx6x.dtsi
+ imx6q-sb-fx6.dtsi
+ imx6q-cm-fx6.dtsi
= imx6q-sbc-fx6.dts

3) CM-FX6 Module:
+ imx6q.dtsi
+ imx6q-cm-fx6.dtsi
= imx6q-cm-fx6.dts

Signed-off-by: Valentin Raevsky <valentin@compulab.co.il>
re-add 2505ec94bd