i915: No longer rely on compatability define in intel_bufmgr.h

Symbol rename from dri_* to drm_intel_* introduced a number of compatability
defines within intel_bufmgr.h.

Replace the old function with the new function, consistent with the balance
of this file.

Signed-off-by: Rhys Kidd <rhyskidd@gmail.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
diff --git a/src/mesa/drivers/dri/i915/intel_regions.c b/src/mesa/drivers/dri/i915/intel_regions.c
index be0dca4..fee7348 100644
--- a/src/mesa/drivers/dri/i915/intel_regions.c
+++ b/src/mesa/drivers/dri/i915/intel_regions.c
@@ -182,7 +182,7 @@
    int ret;
    uint32_t bit_6_swizzle, tiling;
 
-   buffer = intel_bo_gem_create_from_name(screen->bufmgr, name, handle);
+   buffer = drm_intel_bo_gem_create_from_name(screen->bufmgr, name, handle);
    if (buffer == NULL)
       return NULL;
    ret = drm_intel_bo_get_tiling(buffer, &tiling, &bit_6_swizzle);