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>
1 file changed