staging: comedi: drivers/*.c: fix common misspellings

Fix these common misspellings:
  s/dependancy/dependency
  s/occured/occurred
  s/informations/information
  s/intialize/initialize
  s/serveral/several
  s/interrups/interrupts
  s/acknowledgement/acknowledgment
  s/suppport/support
  s/writting/writing

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>