dt-bindings: imx_rsrc: add SC_R_NONE

Add SC_R_NONE entry

Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/include/dt-bindings/soc/imx_rsrc.h b/include/dt-bindings/soc/imx_rsrc.h
index 4870eb9..fb6878f 100644
--- a/include/dt-bindings/soc/imx_rsrc.h
+++ b/include/dt-bindings/soc/imx_rsrc.h
@@ -553,5 +553,6 @@
 #define SC_R_VPU_ENC_1                  539
 #define SC_R_VPU                        540
 #define SC_R_LAST                       541
+#define SC_R_NONE                       0xFFF0
 
 #endif /* DT_BINDINGS_RSCRC_IMX_H */