cpu: Define ArchCPU

For all targets, do this just before including exec/cpu-all.h.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/tricore/cpu.h

@@ -379,6 +379,7 @@ static inline int cpu_mmu_index(CPUTriCoreState *env, bool ifetch)
 }
 
 typedef CPUTriCoreState CPUArchState;
+typedef TriCoreCPU ArchCPU;
 
 #include "exec/cpu-all.h"