soc/amd/common/include/cppc: rename include guard

When the code was made common in commit 8f7f4bf87a ("soc/amd/cezanne,
common: factor out CPPC code to common AMD SoC code"), the include guard
wasn't renamed accordingly, so do that now.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I9eefe2065fae31e97aa4e6710008a6f9712bed40
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73992
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/amd/common/block/include/amdblocks/cppc.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-#ifndef AMD_CEZANNE_CPPC_H
-#define AMD_CEZANNE_CPPC_H
+#ifndef AMD_BLOCK_CPPC_H
+#define AMD_BLOCK_CPPC_H
 
 #include <types.h>
 #include <acpi/acpigen.h>
@@ -11,4 +11,4 @@ void generate_cppc_entries(unsigned int core_id);
 enum cb_err get_ccx_cppc_min_frequency(uint32_t *freq);
 enum cb_err get_ccx_cppc_nom_frequency(uint32_t *freq);
 
-#endif /* AMD_CEZANNE_CPPC_H */
+#endif /* AMD_BLOCK_CPPC_H */