arch: em{7,9,11}d: Add dts support

Add initial device tree support for the em{7,9,11}d SoC and associated
em_starterkit boards.  The device tree at this point specifies cpu core,
memory, interrupt controller, uart's and i2c controllers.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
19 files changed