dt-bindings: consolidate RNG bindings

We have RNG bindings in hwrng/ and rng/. Consolidate them all under rng/.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>

diff --git a/Documentation/devicetree/bindings/hwrng/atmel-trng.txt b/Documentation/devicetree/bindings/rng/atmel-trng.txt
similarity index 100%
rename from Documentation/devicetree/bindings/hwrng/atmel-trng.txt
rename to Documentation/devicetree/bindings/rng/atmel-trng.txt

diff --git a/Documentation/devicetree/bindings/hwrng/brcm,iproc-rng200.txt b/Documentation/devicetree/bindings/rng/brcm,iproc-rng200.txt
similarity index 100%
rename from Documentation/devicetree/bindings/hwrng/brcm,iproc-rng200.txt
rename to Documentation/devicetree/bindings/rng/brcm,iproc-rng200.txt

diff --git a/Documentation/devicetree/bindings/hwrng/omap_rng.txt b/Documentation/devicetree/bindings/rng/omap_rng.txt
similarity index 100%
rename from Documentation/devicetree/bindings/hwrng/omap_rng.txt
rename to Documentation/devicetree/bindings/rng/omap_rng.txt

diff --git a/Documentation/devicetree/bindings/hwrng/timeriomem_rng.txt b/Documentation/devicetree/bindings/rng/timeriomem_rng.txt
similarity index 100%
rename from Documentation/devicetree/bindings/hwrng/timeriomem_rng.txt
rename to Documentation/devicetree/bindings/rng/timeriomem_rng.txt