staging: rtl8192e: Rename variable LeisurePSLeave

Rename variable LeisurePSLeave to leisure_ps_leave to avoid
CamelCase which is not accepted by checkpatch.

Signed-off-by: Yogesh Hegde <yogi.kernel@gmail.com>
Link: https://lore.kernel.org/r/3c63f4d750b7365f233c35c676325c5e4ca54a4c.1687183827.git.yogi.kernel@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>