Add new drmOpenWithType function (v4)

v2: Add drmGetMinorBase, and call drmOpenWithType in drmOpen
v3: Pass 'type' to drmOpenByBusid and drmOpenDevice in drmOpenByName
v4: Renumber node type definitions, and return -1 for unsupported type

Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com> (v3)
Reviewed-by: Frank Binns <frank.binns@imgtec.com>
diff --git a/xf86drm.h b/xf86drm.h
index bfd0670..7e82521 100644
--- a/xf86drm.h
+++ b/xf86drm.h
@@ -552,7 +552,14 @@
 /* General user-level programmer's API: unprivileged */
 extern int           drmAvailable(void);
 extern int           drmOpen(const char *name, const char *busid);
-extern int drmOpenControl(int minor);
+
+#define DRM_NODE_PRIMARY 0
+#define DRM_NODE_CONTROL 1
+#define DRM_NODE_RENDER  2
+extern int           drmOpenWithType(const char *name, const char *busid,
+                                     int type);
+
+extern int           drmOpenControl(int minor);
 extern int           drmOpenRender(int minor);
 extern int           drmClose(int fd);
 extern drmVersionPtr drmGetVersion(int fd);