ARM i.MX27: Add devicetree support

This patch adds basic devicetree support for i.MX27 based SoCs.
Only the bindings for which drivers exist are added here:

- UART
- fec
- CSPI
- I2C
- watchdog
- gpio

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
6 files changed