cpu/intel/model_2065x: Read CPU voltage for SMBIOS

Report smbios_cpu_get_voltage() on Sandy Bridge as well.

Change-Id: I13ea930a58eaedc24d69fa3790f1f2a151558a80
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78432
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/cpu/intel/model_2065x/Kconfig

@@ -10,6 +10,7 @@ config CPU_INTEL_MODEL_2065X
 	select TSC_SYNC_MFENCE
 	select CPU_INTEL_COMMON
 	select CPU_INTEL_COMMON_TIMEBASE
+	select CPU_INTEL_COMMON_VOLTAGE
 
 if CPU_INTEL_MODEL_2065X