staging: ks7010: fix enumeration tags

Driver header declares enumeration types without tags. Using
informative tags makes the code easier to understand and
eliminates the need to comment the enum.

Add tags to enumeration types.

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>