hwrng: omap3-rom - convert timer to delayed work
We cannot put the HW RNG to idle using a timer because we cannot disable clocks from atomic context. Use a delayed work instead. Fixes a warning with CONFIG_DEBUG_MUTEXES on Nokia N900 during boot. Reported-by: NSebastian Reichel <sre@kernel.org> Signed-off-by: NAaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
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