dbus-sdr: Add sensor type entity

Adding sensor type entity to support SEL.
Using this patch to enable log to SEL.

Tested Log:
~# ipmitool sel elist -v
Loading IANA PEN Registry...
Running Get VSO Capabilities my_addr 0x20, transit 0, target 0
Invalid completion code received: Invalid command
Discovered IPMB address 0x0
SEL Record ID          : 0001
    Record Type           : 02
    Timestamp             : 00:20:29 GMT 00:20:29 GMT
    Generator ID          : 0020
    EvM Revision          : 04
    Sensor Type           : Entity Presence
    Sensor Number         : 07
    Event Type            : Sensor-specific Discrete
    Event Direction       : Assertion Event
    Event Data            : 00ffff
    Description           : Present

Signed-off-by: Duke Du <Duke.Du@quantatw.com>
Change-Id: I78c4fb083e8550eded0a85b30ba9a0667350981b
1 file changed