soc: arm: st_stm32: add STM32F437XI

This patch adds support for the STM32F437XI SoC.

Signed-off-by: Markus Fuchs <markus.fuchs@de.sauter-bc.com>

soc/arm/st_stm32/stm32f4/Kconfig.defconfig.stm32f437xx

@@ -0,0 +1,44 @@
+# Kconfig - ST STM32F437XX MCU configuration options
+#
+# Copyright (c) 2019, Markus Fuchs <markus.fuchs@de.sauter-bc.com>
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+if SOC_STM32F437XX
+
+config SOC
+	string
+	default "stm32f437xx"
+
+config NUM_IRQS
+	int
+	default 91
+
+if GPIO_STM32
+
+config GPIO_STM32_PORTF
+	default y
+
+config GPIO_STM32_PORTG
+	default y
+
+config GPIO_STM32_PORTI
+	default y
+
+config GPIO_STM32_PORTJ
+	default y
+
+config GPIO_STM32_PORTK
+	default y
+
+endif # GPIO_STM32
+
+if ENTROPY_GENERATOR
+
+config ENTROPY_STM32_RNG
+	default y
+
+endif # ENTROPY_GENERATOR
+
+endif # SOC_STM32F437XX

soc/arm/st_stm32/stm32f4/Kconfig.soc

@@ -39,6 +39,9 @@ config SOC_STM32F417XX
 config SOC_STM32F429XX
 	bool "STM32F429XI"
 
+config SOC_STM32F437XX
+	bool "STM32F437XX"
+
 config SOC_STM32F446XX
 	bool "STM32F446XX"