exec/cpu-all: Include 'cpu.h' earlier so MMU_USER_IDX is always defined

Include "cpu.h" earlier to get the MMU_USER_IDX definition soon
enough and avoid when refactoring unrelated headers:

  In file included from include/exec/translator.h:271,
                   from ../../accel/tcg/translator.c:13:
  include/exec/cpu-all.h: In function ‘cpu_mmu_index’:
  include/exec/cpu-all.h:274:12: error: ‘MMU_USER_IDX’ undeclared (first use in this function)
    274 |     return MMU_USER_IDX;
        |            ^~~~~~~~~~~~
  include/exec/cpu-all.h:274:12: note: each undeclared identifier is reported only once for each function it appears in
  ninja: build stopped: subcommand failed.

We need to forward-declare cpu_mmu_index() to avoid on user emulation:

  In file included from include/exec/cpu-all.h:263,
                   from include/exec/translator.h:271,
                   from ../../accel/tcg/translator.c:13:
  ../../target/sparc/cpu.h: In function ‘cpu_get_tb_cpu_state’:
  ../../target/sparc/cpu.h:757:13: error: implicit declaration of function ‘cpu_mmu_index’ [-Werror=implicit-function-declaration]
    757 |     flags = cpu_mmu_index(env_cpu(env), false);
        |             ^~~~~~~~~~~~~

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241218155202.71931-5-philmd@linaro.org>
1 file changed