dri: declare IMAGE_DRIVER symbols PUBLIC

this is a temporary hackaround for a linker issue where dri frontend
functions need to be called directly by (glx/egl/gbm) but can't due
to linkage/visibility

eventually all of these frontends will be a single linkage into a single
library, which will avoid the intermediate linking and solve the problem

Reviewed-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30400>

src/gallium/frontends/dri/dri_util.c

@@ -762,7 +762,7 @@ static int driUnbindContext(__DRIcontext *pcp)
 
 /*@}*/
 
-static __DRIdrawable *
+__DRIdrawable *
 driCreateNewDrawable(__DRIscreen *psp,
                      const __DRIconfig *config,
                      void *data)
@@ -855,7 +855,7 @@ dri2ConfigQuerys(__DRIscreen *psp, const char *var, char **val)
     return 0;
 }
 
-static unsigned int
+unsigned int
 driGetAPIMask(__DRIscreen *screen)
 {
     return dri_screen(screen)->api_mask;

src/gallium/frontends/dri/dri_util.h

@@ -103,7 +103,7 @@ struct __DriverContextConfig {
 #define __DRIVER_CONTEXT_ATTRIB_NO_ERROR         (1 << 3)
 #define __DRIVER_CONTEXT_ATTRIB_PROTECTED        (1 << 4)
 
-__DRIscreen *
+PUBLIC __DRIscreen *
 driCreateNewScreen3(int scrn, int fd,
                     const __DRIextension **loader_extensions,
                     const __DRIextension **driver_extensions,
@@ -113,7 +113,7 @@ driCreateNewScreen2(int scrn, int fd,
                     const __DRIextension **loader_extensions,
                     const __DRIextension **driver_extensions,
                     const __DRIconfig ***driver_configs, void *data);
-__DRIcontext *
+PUBLIC __DRIcontext *
 driCreateContextAttribs(__DRIscreen *psp, int api,
                         const __DRIconfig *config,
                         __DRIcontext *shared,
@@ -124,7 +124,10 @@ driCreateContextAttribs(__DRIscreen *psp, int api,
 
 extern uint32_t
 driImageFormatToSizedInternalGLFormat(uint32_t image_format);
-
+PUBLIC unsigned int
+driGetAPIMask(__DRIscreen *screen);
+PUBLIC __DRIdrawable *
+driCreateNewDrawable(__DRIscreen *psp, const __DRIconfig *config, void *data);
 extern const __DRIimageDriverExtension driImageDriverExtension;
 
 #endif /* _DRI_UTIL_H_ */

src/gallium/targets/dri/dri.sym.in

@@ -1,6 +1,8 @@
 {
 	global:
 		__driDriverGetExtensions*;
+		driCreate*;
+		driGet*;
 		dri_loader_get_extensions;
 		@nouveau_drm_screen_create@
 		@radeon_drm_winsys_create@