callouts: add script to generate I2C callouts

The script writes I2C callout information to an output file in the
following YAML format:

I2C Port number:
    I2C address: FRU path

Only those I2C ports that the BMC can talk to are considered.

Change-Id: Id673b114f77f9763514a3dd3f6ba95568983f4c6
Signed-off-by: Deepak Kodihalli <dkodihal@in.ibm.com>
1 file changed