rusticl: allow packagers to enable freedreno by default

The msm driver hasn't yet passed conformance, so it's not part of the
auto set at this point in time. But this will allow distribution to
enable it by default, if they find it suitable.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35618>

meson.options

@@ -155,7 +155,7 @@ option(
 option(
   'gallium-rusticl-enable-drivers',
   type : 'array',
-  value : ['auto', 'asahi', 'radeonsi'],
+  value : ['auto', 'asahi', 'freedreno', 'radeonsi'],
   description : 'List of gallium drivers for which rusticl will be enabled ' +
                 'by default',
 )

src/gallium/frontends/rusticl/mesa/pipe/device.rs

@@ -64,6 +64,8 @@ fn get_enabled_devs() -> HashMap<String, u32> {
     let default_devs: &[&str] = &[
         #[cfg(any(rusticl_enable_asahi, rusticl_enable_auto))]
         "asahi",
+        #[cfg(rusticl_enable_freedreno)]
+        "freedreno",
         #[cfg(rusticl_enable_radeonsi)]
         "radeonsi",
     ];