dbus-sdr: Add processor sensor type

- Add processor sensor type to support SEL
  In the origin code, the sensor type will be reserved in SEL record.

~# 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          : 0003
 Record Type           : 02
 Timestamp             : 01:03:11 GMT 01:03:11 GMT
 Generator ID          : 0020
 EvM Revision          : 04
 Sensor Type           : reserved
 Sensor Number         : 26
 Event Type            : Unspecified
 Event Direction       : Assertion Event
 Event Data            : 0cffff
 Description           :

- After this fix, the SEL record work as expect.

~# 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          : 0003
 Record Type           : 02
 Timestamp             : 01:03:11 GMT 01:03:11 GMT
 Generator ID          : 0020
 EvM Revision          : 04
 Sensor Type           : Processor
 Sensor Number         : 26
 Event Type            : Sensor-specific Discrete
 Event Direction       : Assertion Event
 Event Data            : 0cffff
 Description           : Correctable machine check error

Signed-off-by: David Wang <davidwang@quantatw.com>
Change-Id: Idf8b043c076fe21afeac443cfedcfc356094a0b8
diff --git a/include/dbus-sdr/sdrutils.hpp b/include/dbus-sdr/sdrutils.hpp
index cfd76b3..480542e 100644
--- a/include/dbus-sdr/sdrutils.hpp
+++ b/include/dbus-sdr/sdrutils.hpp
@@ -301,14 +301,15 @@
 
 enum class SensorTypeCodes : uint8_t
 {
-    reserved = 0x0,
-    temperature = 0x1,
-    voltage = 0x2,
-    current = 0x3,
-    fan = 0x4,
-    other = 0xB,
-    memory = 0x0c,
+    reserved = 0x00,
+    temperature = 0x01,
+    voltage = 0x02,
+    current = 0x03,
+    fan = 0x04,
+    processor = 0x07,
     power_unit = 0x09,
+    other = 0x0b,
+    memory = 0x0c,
     buttons = 0x14,
     watchdog2 = 0x23,
 };
@@ -333,6 +334,8 @@
                                      SensorEventTypeCodes::threshold)},
          {"fan_pwm", std::make_pair(SensorTypeCodes::fan,
                                     SensorEventTypeCodes::threshold)},
+         {"processor", std::make_pair(SensorTypeCodes::processor,
+                                      SensorEventTypeCodes::sensorSpecified)},
          {"power", std::make_pair(SensorTypeCodes::other,
                                   SensorEventTypeCodes::threshold)},
          {"memory", std::make_pair(SensorTypeCodes::memory,