x86/CPU/AMD: Terminate the erratum_1386_microcode array

The erratum_1386_microcode array requires an empty entry at the end.
Otherwise x86_match_cpu_with_stepping() will continue iterate the array after
it ended.

Add an empty entry to erratum_1386_microcode to its end.

Fixes: 29ba89f ("x86/CPU/AMD: Improve the erratum 1386 workaround")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/r/20241126134722.480975-1-bigeasy@linutronix.de

Author: Sebastian Andrzej Siewior

arch/x86/kernel/cpu/amd.c

@@ -798,6 +798,7 @@ static void init_amd_bd(struct cpuinfo_x86 *c)
 static const struct x86_cpu_desc erratum_1386_microcode[] = {
 	AMD_CPU_DESC(0x17,  0x1, 0x2, 0x0800126e),
 	AMD_CPU_DESC(0x17, 0x31, 0x0, 0x08301052),
+	{},
 };
 
 static void fix_erratum_1386(struct cpuinfo_x86 *c)