nvmem: sc27xx: Change to use devm_hwspin_lock_request_specific() to request one hwlock

Change to use devm_hwspin_lock_request_specific() to help to simplify the
cleanup code for drivers requesting one hwlock. Thus we can remove the
redundant sc27xx_efuse_remove() and platform_set_drvdata().

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>