staging: rtl8192u: Fix indentation

Checkpatch reports WARNING:SUSPECT_CODE_INDENT in several places. Fix
this by aligning code properly with tabs.

Signed-off-by: Stephen Brennan <stephen@brennan.io>
Link: https://lore.kernel.org/r/20190828043542.3753-1-stephen@brennan.io


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