board: Add stm32h7 SoC, discovery and evaluation boards support

This patch adds support for stm32h7 soc family, stm32h743
discovery and evaluation boards.

For more information about STM32H7 series, please visit:
http://www.st.com/en/microcontrollers/stm32h7-series.html

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/mach-stm32/stm32h7/Kconfig b/arch/arm/mach-stm32/stm32h7/Kconfig
new file mode 100644
index 0000000..55e6217
--- /dev/null
+++ b/arch/arm/mach-stm32/stm32h7/Kconfig
@@ -0,0 +1,12 @@
+if STM32H7
+
+config TARGET_STM32H743_DISCO
+	bool "STM32H743 Discovery board"
+
+config TARGET_STM32H743_EVAL
+	bool "STM32H743 Evaluation board"
+
+source "board/st/stm32h743-eval/Kconfig"
+source "board/st/stm32h743-disco/Kconfig"
+
+endif