dcmi: get sensor info: read config

This commit adds the code to read dcmi sensor config, in order to
respond to the 'get sensor info' command.

Resolves openbmc/openbmc#2623.

Change-Id: Id661ec2c1bae214b503308577d7f825a5dfeb629
Signed-off-by: Deepak Kodihalli <dkodihal@in.ibm.com>
2 files changed