staging: rtl8192e: add missing spaces around operators

Add missing spaces around operators to improve readability and clear
checkpatch issues.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20230518163201.14463-1-straube.linux@gmail.com


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