stm32f4: Add support for stm32f429-discovery board

Signed-off-by: Kamil Lulko <rev13@wp.pl>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 987f391..f646c95 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -789,6 +789,10 @@
 	select DM_SERIAL
 	select DM_I2C
 
+config TARGET_STM32F429_DISCOVERY
+	bool "Support STM32F429 Discovery"
+	select CPU_V7M
+
 endchoice
 
 source "arch/arm/mach-at91/Kconfig"
@@ -926,6 +930,7 @@
 source "board/spear/x600/Kconfig"
 source "board/st-ericsson/snowball/Kconfig"
 source "board/st-ericsson/u8500/Kconfig"
+source "board/st/stm32f429-discovery/Kconfig"
 source "board/st/stv0991/Kconfig"
 source "board/sunxi/Kconfig"
 source "board/syteco/zmx25/Kconfig"