capstone: Allow version 3.0.5 again

According to

 https://lore.kernel.org/qemu-devel/20200921174118.39352-1-richard.henderson@linaro.org/

there was an issue with Capstone 3.0.4 from Ubuntu 18, which was the reason
for bumping our minimum Capstone requirement to version 4.0. And indeed,
compiling with that version 3.0.4 from Ubuntu 18.04 still fails (after
allowing it with a hack in meson.build). But now that we've dropped support
for Ubuntu 18.04, that issue is not relevant anymore. Compiling with Capstone
version 3.0.5 (e.g. used in Ubuntu 20.04) seems to work fine, so let's allow
that version again.

Message-Id: <20220516145823.148450-3-thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
diff --git a/.gitlab-ci.d/buildtest.yml b/.gitlab-ci.d/buildtest.yml
index 0aea7ab..a4d43d7 100644
--- a/.gitlab-ci.d/buildtest.yml
+++ b/.gitlab-ci.d/buildtest.yml
@@ -42,6 +42,7 @@
   variables:
     IMAGE: ubuntu2004
     CONFIGURE_ARGS: --enable-docs --enable-fdt=system --enable-slirp=system
+        --enable-capstone=system
     TARGETS: aarch64-softmmu alpha-softmmu cris-softmmu hppa-softmmu
       microblazeel-softmmu mips64el-softmmu
     MAKE_CHECK_ARGS: check-build
diff --git a/meson.build b/meson.build
index 53a4728..526ff29 100644
--- a/meson.build
+++ b/meson.build
@@ -2525,7 +2525,7 @@
 capstone_opt = get_option('capstone')
 if capstone_opt in ['enabled', 'auto', 'system']
   have_internal = fs.exists(meson.current_source_dir() / 'capstone/Makefile')
-  capstone = dependency('capstone', version: '>=4.0',
+  capstone = dependency('capstone', version: '>=3.0.5',
                         kwargs: static_kwargs, method: 'pkg-config',
                         required: capstone_opt == 'system' or
                                   capstone_opt == 'enabled' and not have_internal)