busybox: some more !getopt_long fixes in hwclock.sh
busybox: some more !getopt_long fixes in hwclock.sh

busybox' hwclock can be built without support for getopt_long.
Flags of the big hwclock are compatible with the busybox version.

Signed-off-by: Bernhard Reutner-Fischer <ce1ac9e9ad16abccd7821f371ad381197b4768ac@gmail.com>

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