cpu: Add missing 'exec/exec-all.h' and 'qemu/accel.h' headers

cpu.c requires "exec/exec-all.h" to call tlb_flush() and
"qemu/accel.h" to call accel_cpu_realizefn().

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220214183144.27402-6-f4bug@amsat.org>

cpu.c

@@ -35,10 +35,12 @@
 #include "sysemu/tcg.h"
 #include "sysemu/kvm.h"
 #include "sysemu/replay.h"
+#include "exec/exec-all.h"
 #include "exec/translate-all.h"
 #include "exec/log.h"
 #include "hw/core/accel-cpu.h"
 #include "trace/trace-root.h"
+#include "qemu/accel.h"
 
 uintptr_t qemu_host_page_size;
 intptr_t qemu_host_page_mask;