arm: dts: k3*: Use local header for SERDES MUX idle-state values

The DTS uses constants for SERDES MUX idle state values which were earlier
provided as bindings header. But they are unsuitable for bindings.
So move these constants in a header next to DTS.

NOTE: sync with v6.6-rc1 will bring in this change naturally.

Signed-off-by: Nishanth Menon <nm@ti.com>
diff --git a/arch/arm/dts/k3-j721e-main.dtsi b/arch/arm/dts/k3-j721e-main.dtsi
index cf34823..d2edf5d 100644
--- a/arch/arm/dts/k3-j721e-main.dtsi
+++ b/arch/arm/dts/k3-j721e-main.dtsi
@@ -6,7 +6,7 @@
  */
 #include <dt-bindings/phy/phy.h>
 #include <dt-bindings/mux/mux.h>
-#include <dt-bindings/mux/ti-serdes.h>
+#include "k3-serdes.h"
 
 / {
 	cmn_refclk: clock-cmnrefclk {