Create a header file to define the clock IDs used by the Tegra20 clock
binding. Remove the list of definitions from the binding documentation,
and refer the reader to the header file.

This will allow the same header to be used by both device tree files,
and drivers implementing this binding, which guarantees that the two
stay in sync. This also makes device trees more readable by using names
instead of magic numbers.
Signed-off-by: NHiroshi Doyu <hdoyu@nvidia.com>
[swarren, add header to clock/ instead of clk/ to match binding location]
Signed-off-by: NStephen Warren <swarren@nvidia.com>

The ARM GIC binding defines a few custom cells and flags for its IRQ
specifier. Provide names for those.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Acked-by: NRob Herring <rob.herring@calxeda.com>

Many IRQ device tree bindings use the same flags. Create a header to
define those.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Acked-by: NRob Herring <rob.herring@calxeda.com>

Many GPIO device tree bindings use the same flags. Create a header to
define those.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Acked-by: NRob Herring <rob.herring@calxeda.com>