staging: ks7010: conver MIB attributes preprocessor defs into an enum

This commit just change some preprocessor definitions related
with MIB attributes into an enumeration which is much cleaner
for this here. Also add kerneldoc to avoid long comment lines.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>