meson: Include various directories providing stubs before libqemuutil

Stubs are provided by libqemuutil. We want to use the generic meson
machinery to provide stubs once, instead of per sub-directories. Move
the 'subdir' calls earlier so when these directories are processed
they can add units to the global stub_ss[] source set.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20260225035739.42848-2-philmd@linaro.org>

meson.build

@@ -3754,6 +3754,14 @@ subdir('authz')
 subdir('crypto')
 subdir('ui')
 subdir('gdbstub')
+subdir('semihosting')
+subdir('audio')
+subdir('io')
+subdir('chardev')
+subdir('fsdev')
+subdir('dump')
+subdir('accel')
+
 if have_system
   subdir('hw')
 else
@@ -3799,12 +3807,6 @@ if have_system or have_user
   subdir('target')
 endif
 
-subdir('audio')
-subdir('io')
-subdir('chardev')
-subdir('fsdev')
-subdir('dump')
-
 if have_block
   block_ss.add(files(
     'block.c',
@@ -3874,11 +3876,9 @@ subdir('migration')
 subdir('monitor')
 subdir('net')
 subdir('replay')
-subdir('semihosting')
 subdir('stats')
 subdir('tcg')
 subdir('fpu')
-subdir('accel')
 subdir('plugins')
 subdir('ebpf')