soc/amd/cezanne: add soc/cpu.h with CPUID define for Cezanne A0 stepping

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I9b6d8b0c5ff5e58f6ab487d9fe724534f0108f83
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50153
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/soc/amd/cezanne/include/soc/cpu.h

@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef AMD_CEZANNE_CPU_H
+#define AMD_CEZANNE_CPU_H
+
+#define CEZANNE_A0_CPUID	0x00a50f00
+
+#endif /* AMD_CEZANNE_CPU_H */