hwspinlock: sprd: Remove redundant header files

Remove redundant header files.

Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Link: https://lore.kernel.org/r/1590991552-93643-1-git-send-email-baolin.wang@linux.alibaba.com


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>