soc/amd/common/block/noncar/cpu: Provide correct smbios processor family

Return the correct processor family code for smbios per System
Management BIOS (SMBIOS) Reference Specification DSP0134 revision 3.5.0.

BUG=b:234409052
TEST=Boot chausie to chromeos and verify "dmidecode -t processor"
outputs the correct processor family.

Signed-off-by: Fred Reitberger <reitbergerfred@gmail.com>
Change-Id: I617ce3e23f4b28a197034756d285339595d3b53b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65364
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/amd/common/block/cpu/noncar/cpu.c

@@ -5,6 +5,7 @@
 #include <cpu/cpu.h>
 #include <cpu/x86/msr.h>
 #include <cpu/amd/msr.h>
+#include <smbios.h>
 #include <soc/iomap.h>
 
 int get_cpu_count(void)
@@ -12,6 +13,11 @@ int get_cpu_count(void)
 	return 1 + (cpuid_ecx(0x80000008) & 0xff);
 }
 
+unsigned int smbios_processor_family(struct cpuid_result res)
+{
+	return 0x6b; /* Zen */
+}
+
 unsigned int get_threads_per_core(void)
 {
 	return 1 + ((cpuid_ebx(CPUID_EBX_CORE_ID) & CPUID_EBX_THREADS_MASK)