staging: rtl8192e: add space before open parenthesis

Fix the coding style error by adding a space before
open parenthesis '(' in a conditional statement.

Signed-off-by: Darshan D V <darshandv10@gmail.com>
Link: https://lore.kernel.org/r/20200720091442.19532-1-darshandv10@gmail.com


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