configure: use a native non-cross compiler for linux-user

Commit c2118e9e ("configure: don't try a "native" cross for linux-user",
2023-11-23) sought to avoid issues with using the native compiler with a
cross-endian or cross-bitness setup.  However, in doing so it ended up
requiring a cross compiler setup (and most likely a slow compiler setup)
even when building TCG tests that are native to the host architecture.
Always allow the host compiler in that case.

Cc: qemu-stable@nongnu.org
Fixes: c2118e9e ("configure: don't try a "native" cross for linux-user", 2023-11-23)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 007531586aa8ef6dccdadd927b89a50af62288d1)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

configure

@@ -1387,8 +1387,8 @@ probe_target_compiler() {
   done
 
   try=cross
-  # For softmmu/roms we might be able to use the host compiler
-  if [ "${1%softmmu}" != "$1" ]; then
+  # For softmmu/roms also look for a bi-endian or multilib-enabled host compiler
+  if [ "${1%softmmu}" != "$1" ] || test "$target_arch" = "$cpu"; then
       case "$target_arch:$cpu" in
         aarch64_be:aarch64 | \
         armeb:arm | \