cpu: Set DBus EffectiveFamily property

According to the phosphor-dbus-interfaces yaml file, EffectiveFamily is
the raw value of the Processor Family in SMBIOS Processor Information
structure defined in DSP0134 section 7.5.2. This patch sets that value
on DBus.

Tested:
Verified the value of EffectiveFamily matches the value in SMBIOS table

Change-Id: I9b2274e9fc263d6550fd48e33c7ad233c910b1c1
Signed-off-by: Jiaqing Zhao <jiaqing.zhao@intel.com>
diff --git a/src/cpu.cpp b/src/cpu.cpp
index daab15b..4ae98b9 100644
--- a/src/cpu.cpp
+++ b/src/cpu.cpp
@@ -54,11 +54,13 @@
         else
         {
             processor::family(it2->second);
+            processor::effectiveFamily(family2);
         }
     }
     else
     {
         processor::family(it->second);
+        processor::effectiveFamily(family);
     }
 }