camcontrol patch to allow users to specify device node names

[Bruce Cran]

In camcontrol, there's code to check that a device hasn't been specified as 
"/dev/daX" - in this case, an error is printed and it exits. However, a plain 
device name is already allowed and I've checked that passing a device node 
does work.

I've attached a patch which removes this restriction and allows people to use 
"camcontrol tur /dev/da0" if they want to.

Is there a reason for disallowing people to specify the device node, or could 
this patch be committed with an update to the man page to remove the sentence 
about character device node names not being allowed?

-- 
Bruce Cran
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