Changes to align with IPMI spec

IPMI Spec Section 19.2:
Unless otherwise noted, Reserved bits and fields in commands(request messages)
and responses shall be written as '0'.

Return "out of range" error for unsupported power policy
and also return the supported policies on success.

Change-Id: I51d63b86ef0d3076438649abc49c63267c57cbd5
Signed-off-by: Yong Li <yong.b.li@linux.intel.com>
1 file changed