staging:rtl8192u: Rename TSpec > t_spec - Style

Rename the TS_COMMON_INFO structure's member TSpec to t_spec. This change
clears the checkpatch issue with CamelCase naming of variables. There should
be no impact on runtime execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>