ARM: dts: stm32mp1: DT alignment with Linux 5.6-rc1

This commit manages diversity for STM32M15x SOCs with:
- dedicated files to support all STM32MP15 SOCs family.
  The differences between those SOCs are:
  -STM32MP151 [1]: common file.
  -STM32MP153 [2]: STM32MP151 + CANs + a second CortexA7-CPU.
  -STM32MP157 [3]: STM32MP153 + DSI + GPU.
- new files to manage security diversity on STM32MP15x SOCs.
  On STM32MP15xY, "Y" gives information:
  -Y = A means no cryp IP and no secure boot.
  -Y = C means cryp IP + secure boot.
- stm32mp157 pinctrl files to better manage package diversity.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
diff --git a/arch/arm/dts/stm32mp15xxab-pinctrl.dtsi b/arch/arm/dts/stm32mp15xxab-pinctrl.dtsi
new file mode 100644
index 0000000..328dad1
--- /dev/null
+++ b/arch/arm/dts/stm32mp15xxab-pinctrl.dtsi
@@ -0,0 +1,57 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (C) STMicroelectronics 2019 - All Rights Reserved
+ * Author: Alexandre Torgue <alexandre.torgue@st.com> for STMicroelectronics.
+ */
+
+&pinctrl {
+	st,package = <STM32MP_PKG_AB>;
+
+	gpioa: gpio@50002000 {
+		status = "okay";
+		ngpios = <16>;
+		gpio-ranges = <&pinctrl 0 0 16>;
+	};
+
+	gpiob: gpio@50003000 {
+		status = "okay";
+		ngpios = <16>;
+		gpio-ranges = <&pinctrl 0 16 16>;
+	};
+
+	gpioc: gpio@50004000 {
+		status = "okay";
+		ngpios = <16>;
+		gpio-ranges = <&pinctrl 0 32 16>;
+	};
+
+	gpiod: gpio@50005000 {
+		status = "okay";
+		ngpios = <16>;
+		gpio-ranges = <&pinctrl 0 48 16>;
+	};
+
+	gpioe: gpio@50006000 {
+		status = "okay";
+		ngpios = <16>;
+		gpio-ranges = <&pinctrl 0 64 16>;
+	};
+
+	gpiof: gpio@50007000 {
+		status = "okay";
+		ngpios = <6>;
+		gpio-ranges = <&pinctrl 6 86 6>;
+	};
+
+	gpiog: gpio@50008000 {
+		status = "okay";
+		ngpios = <10>;
+		gpio-ranges = <&pinctrl 6 102 10>;
+	};
+
+	gpioh: gpio@50009000 {
+		status = "okay";
+		ngpios = <2>;
+		gpio-ranges = <&pinctrl 0 112 2>;
+	};
+};