Staging: rtl8723bs: fix spaces in osdep_service_linux.h

Staging: rtl8723bs: fix spaces in osdep_service_linux.h

This commit fixes the following checkpatch.pl error:

    ERROR:POINTER_LOCATION: "foo * bar" should be "foo *bar"
    #123: FILE: ./include/osdep_service_linux.h:123:
    +extern struct net_device * rtw_alloc_etherdev(int sizeof_priv);

Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Marco Cesati <marcocesati@gmail.com>
Link: https://lore.kernel.org/r/20210315170618.2566-49-marcocesati@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>