exec: Include 'cpu.h' before validating CPUArchState placement

CPUArchState 'env' field is defined within the ArchCPU structure,
so we need to include each target "cpu.h" header which defines it.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20231211212003.21686-2-philmd@linaro.org>

include/exec/cpu-all.h

@@ -391,6 +391,7 @@ static inline bool tlb_hit(uint64_t tlb_addr, vaddr addr)
 #endif /* !CONFIG_USER_ONLY */
 
 /* Validate correct placement of CPUArchState. */
+#include "cpu.h"
 QEMU_BUILD_BUG_ON(offsetof(ArchCPU, parent_obj) != 0);
 QEMU_BUILD_BUG_ON(offsetof(ArchCPU, env) != sizeof(CPUState));