dt-bindings: pinctrl: k3: Introduce pinmux definitions for AM64

Add pinctrl macros for AM64 SoC. These macro definitions are similar to
that of previous platforms, but adding new definitions to avoid any
naming confusions in the soc dts files.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
diff --git a/include/dt-bindings/pinctrl/k3.h b/include/dt-bindings/pinctrl/k3.h
index ce0cd38..e6cb1d0 100644
--- a/include/dt-bindings/pinctrl/k3.h
+++ b/include/dt-bindings/pinctrl/k3.h
@@ -2,7 +2,7 @@
 /*
  * This header provides constants for TI K3-AM65 pinctrl bindings.
  *
- * Copyright (C) 2018 Texas Instruments
+ * Copyright (C) 2018-2021 Texas Instruments
  */
 #ifndef _DT_BINDINGS_PINCTRL_TI_K3_AM65_H
 #define _DT_BINDINGS_PINCTRL_TI_K3_AM65_H
@@ -38,4 +38,7 @@
 #define J721E_IOPAD(pa, val, muxmode)		(((pa) & 0x1fff)) ((val) | (muxmode))
 #define J721E_WKUP_IOPAD(pa, val, muxmode)	(((pa) & 0x1fff)) ((val) | (muxmode))
 
+#define AM64X_IOPAD(pa, val, muxmode)		(((pa) & 0x1fff)) ((val) | (muxmode))
+#define AM64X_MCU_IOPAD(pa, val, muxmode)	(((pa) & 0x1fff)) ((val) | (muxmode))
+
 #endif