STAGING: rtl8192u: fix checkpatch error about pointer position in r8192U_core.c

This patch fixes the pointer position in r8192U_core.c
to meet the kernel coding style conventions.
Signed-off-by: NXenia Ragiadakou <burzalodowa@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>