arch/x86/include/cpu: introduce CPU_TABLE_END CPU table terminator

Instead of having a magic entry in the CPU device ID table list to tell
find_cpu_driver that it has reached the end of the list, introduce and
use CPU_TABLE_END. Since the vendor entry in the CPU device ID struct is
compared against X86_VENDOR_INVALID which is 0, use X86_VENDOR_INVALID
instead of the 0 in the CPU_TABLE_END definition.

TEST=Timeless build for Mandolin results in identical image.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Suggested-by: Angel Pons <th3fanbus@gmail.com>
Change-Id: I0cae6d65b2265cf5ebf90fe1a9d885d0c489eb92
Reviewed-on: https://review.coreboot.org/c/coreboot/+/72888
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/arch/x86/include/arch/cpu.h b/src/arch/x86/include/arch/cpu.h
index a0a5840f78..b8c990e631 100644
--- a/src/arch/x86/include/arch/cpu.h
+++ b/src/arch/x86/include/arch/cpu.h
@@ -130,6 +130,8 @@ static inline bool cpuid_match(uint32_t a, uint32_t b, uint32_t mask)
 	return (a & mask) == (b & mask);
 }
 
+#define CPU_TABLE_END	{ X86_VENDOR_INVALID, 0, 0 }
+
 struct cpu_device_id {
 	unsigned int vendor;
 	uint32_t device;