semihosting: Simplified tc_write() by directly invoking hostio_write(…

…) rather than using the target controller indirection

src/target/semihosting.c

@@ -229,7 +229,6 @@ int hostio_system(target_controller_s *tc, target_addr_t cmd, size_t cmd_len)
 /* Interface to host system calls */
 int tc_write(target_s *t, int fd, target_addr_t buf, unsigned int count)
 {
-#if PC_HOSTED == 0
  if (t->stdout_redirected && (fd == STDOUT_FILENO || fd == STDERR_FILENO)) {
  while (count) {
  uint8_t tmp[STDOUT_READ_BUF_SIZE];
@@ -243,11 +242,7 @@ int tc_write(target_s *t, int fd, target_addr_t buf, unsigned int count)
  }
  return 0;
  }
-#endif
-
- if (t->tc->write == NULL)
- return 0;
- return t->tc->write(t->tc, fd, buf, count);
+ return hostio_write(t->tc, fd, buf, count);
 }
 
 /* probe memory access functions */