hwrng: doc - Fix device node name reference /dev/hw_random => /dev/hwrng
In April 2009, commit d4056405 ("Driver Core: misc: add node name support for misc devices.") inadvertently changed the device node name from /dev/hw_random to /dev/hwrng. Since 6 years has passed since the change it seems unpractical to change it back, as this node name is probably considered ABI by now. So instead, we'll just change the documentation to match the current situation. NB: It looks like rng-tools have already been updated. Signed-off-by: NLee Jones <lee.jones@linaro.org> Acked-by: NKieran Bingham <kieranbingham@gmail.com> Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
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