staging: vc04_services: Remove enum typedefs in vchi

Remove enum typedefs from header files and files which include them
in vchi. Issue found by checkpatch.

Signed-off-by: Jamal Shareef <jamal.k.shareef@gmail.com>
Link: https://lore.kernel.org/r/4afc7d28ef9ad249cac3bf7c3dd453bb64b13657.1572652827.git.jamal.k.shareef@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>