Staging: rtl8192e: fix spacing style issues in r8180_93cx6.c

This is a patch to the r8180_93cx6.c file that fixes up spacing issue
warnings found by the checkpatch.pl tool

Signed-off-by: Tim Schofield <tim@weberpafrica.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>