hwrng: xilinx - Move xilinx-rng into drivers/char/hw_random/

Since this file just implements a hwrng driver, move it into
drivers/char/hw_random/. Rename the kconfig option accordingly as well.

Si

hwrng: xilinx - Move xilinx-rng into drivers/char/hw_random/

Since this file just implements a hwrng driver, move it into
drivers/char/hw_random/. Rename the kconfig option accordingly as well.

Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

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