Package the driver for Chaoskey, a USB dongle that provides a
True Random Number Generator (TRNG) and feeds entropy to kernel.
Chaoskey driver is included the upstream Linux sources, so
only packaging it is needed.
Run-tested with ipq806x/R7800 and mvebu/WRT3200ACM.
(Requires CONFIG_HW_RANDOM kernel option.)
Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>