kill the socket_shutdown()/shutdown_socket() confusion by making it
one single function. move cs_socket_put() in there. nicer to read and
smaller:

original:
   text	   data	    bss	    dec	    hex	filename
  25181	   1076	     32	  26289	   66b1	drivers/pcmcia/pcmcia_core.ko

patched:
   text	   data	    bss	    dec	    hex	filename
  24973	   1076	     32	  26081	   65e1	drivers/pcmcia/pcmcia_core.ko
Signed-off-by: NDaniel Ritz <daniel.ritz@gmx.ch>
Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net>