phy: miphy365x: Add MiPHY365x header file for DT x Driver defines

This provides the shared header file which will be reference from both
the MiPHY365x driver and its associated Device Tree node(s).

Cc: Kishon Vijay Abraham I <[e-mail]>
Acked-by: Mark Rutland <[e-mail]>
Acked-by: Alexandre Torgue <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>
Signed-off-by: Kishon Vijay Abraham I <[e-mail]>

include/dt-bindings/phy/phy-miphy365x.h

···
+/*
+ * This header provides constants for the phy framework
+ * based on the STMicroelectronics MiPHY365x.
+ *
+ * Author: Lee Jones <[e-mail]>
+ */
+#ifndef _DT_BINDINGS_PHY_MIPHY
+#define _DT_BINDINGS_PHY_MIPHY
+
+#define MIPHY_TYPE_SATA		1
+#define MIPHY_TYPE_PCIE		2
+#define MIPHY_TYPE_USB		3
+
+#endif /* _DT_BINDINGS_PHY_MIPHY */