staging/easycap: add level 1 tabs in usb_probe/disconnect function

Add first level indentation before revamping the functions
This of course breaks 80 characters limit but it will be
fixed through the revamp
Signed-off-by: NTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>