staging: rtl8712 - fix up non-kerneldoc comments

Building with W=1 reports (among other things)

  CC [M]  drivers/staging/rtl8712/rtl871x_ioctl_linux.o
drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1106: warning: Cannot understand  *
 on line 1106 - I thought it was a doc line

  CC [M]  drivers/staging/rtl8712/os_intfs.o
drivers/staging/rtl8712/os_intfs.c:366: warning: Cannot understand  *
 on line 366 - I thought it was a doc line
drivers/staging/rtl8712/os_intfs.c:434: warning: Cannot understand  *
 on line 434 - I thought it was a doc line

Fix up the non-kerneldoc comments

Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>