target/sh4: Honor QEMU_LOG_FILENAME with QEMU_LOG=cpu

When using QEMU_LOG=cpu on sh4, QEMU_LOG_FILENAME is partially ignored.
Fix by using qemu_fprintf() instead of qemu_printf() in the respective
places.

Fixes: 90c84c560067 ("qom/cpu: Simplify how CPUClass:cpu_dump_state() prints")
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230316003411.129462-1-iii@linux.ibm.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

target/sh4/translate.c

@@ -171,16 +171,16 @@ void superh_cpu_dump_state(CPUState *cs, FILE *f, int flags)
     qemu_fprintf(f, "sgr=0x%08x dbr=0x%08x delayed_pc=0x%08x fpul=0x%08x\n",
                  env->sgr, env->dbr, env->delayed_pc, env->fpul);
     for (i = 0; i < 24; i += 4) {
-        qemu_printf("r%d=0x%08x r%d=0x%08x r%d=0x%08x r%d=0x%08x\n",
-		    i, env->gregs[i], i + 1, env->gregs[i + 1],
-		    i + 2, env->gregs[i + 2], i + 3, env->gregs[i + 3]);
+        qemu_fprintf(f, "r%d=0x%08x r%d=0x%08x r%d=0x%08x r%d=0x%08x\n",
+                     i, env->gregs[i], i + 1, env->gregs[i + 1],
+                     i + 2, env->gregs[i + 2], i + 3, env->gregs[i + 3]);
     }
     if (env->flags & TB_FLAG_DELAY_SLOT) {
-        qemu_printf("in delay slot (delayed_pc=0x%08x)\n",
-		    env->delayed_pc);
+        qemu_fprintf(f, "in delay slot (delayed_pc=0x%08x)\n",
+                     env->delayed_pc);
     } else if (env->flags & TB_FLAG_DELAY_SLOT_COND) {
-        qemu_printf("in conditional delay slot (delayed_pc=0x%08x)\n",
-		    env->delayed_pc);
+        qemu_fprintf(f, "in conditional delay slot (delayed_pc=0x%08x)\n",
+                     env->delayed_pc);
     } else if (env->flags & TB_FLAG_DELAY_SLOT_RTE) {
         qemu_fprintf(f, "in rte delay slot (delayed_pc=0x%08x)\n",
                      env->delayed_pc);