cdev removal broke cobalt_btns.c compilation

Commit 0c1efd365306c9b04df5abdd41e9b4dc721e84fb broke the compilation of 
cobalt_btns.c:

<--  snip  -->

...
  CC      drivers/input/misc/cobalt_btns.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/input/misc/cobalt_btns.c: In function 'cobalt_buttons_probe':
/home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/input/misc/cobalt_btns.c:100: error: 'struct input_dev' has no member named 'cdev'
...
make[4]: *** [drivers/input/misc/cobalt_btns.o] Error 1
...

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cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed