r300g: move vborender context function to seperate file

r300g: Un-migrate r300_draw_render.

It'll make maintaining the SW TCL path easier.

src/gallium/drivers/r300/r300_render.c

@@ -20,6 +20,9 @@
  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
 
+/* r300_render: Vertex and index buffer primitive emission. Contains both
+ * HW TCL fastpath rendering, and SW TCL Draw-assisted rendering. */
+
 #include "draw/draw_context.h"
 #include "draw/draw_vbuf.h"
 
@@ -38,7 +41,7 @@
 /* r300_render: Vertex and index buffer primitive emission. */
 #define R300_MAX_VBO_SIZE  (1024 * 1024)
 
-static uint32_t r300_translate_primitive(unsigned prim)
+uint32_t r300_translate_primitive(unsigned prim)
 {
     switch (prim) {
         case PIPE_PRIM_POINTS:

src/gallium/drivers/r300/r300_render.h

@@ -23,6 +23,8 @@
 #ifndef R300_RENDER_H
 #define R300_RENDER_H
 
+uint32_t r300_translate_primitive(unsigned prim);
+
 boolean r300_draw_range_elements(struct pipe_context* pipe,
                                  struct pipe_buffer* indexBuffer,
                                  unsigned indexSize,