target/sparc: Include missing 'accel/tcg/cpu-ops.h' header in cpu.c

target/sparc/cpu.c implement a TCGCPUOps structure, which is
defined in "accel/tcg/cpu-ops.h":

  1040 static const TCGCPUOps sparc_tcg_ops = {
  ...

While this header is currently included indirectly, make the
inclusion explicit to avoid issue when refactoring unrelated
headers.

Signed-off-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20260617160426.64461-2-philmd@oss.qualcomm.com>

target/sparc/cpu.c

@@ -23,6 +23,7 @@
 #include "qemu/module.h"
 #include "qemu/qemu-print.h"
 #include "accel/tcg/cpu-mmu-index.h"
+#include "accel/tcg/cpu-ops.h"
 #include "exec/translation-block.h"
 #include "hw/core/qdev-properties.h"
 #include "qapi/visitor.h"