arm: rmobile: Add Stout board support

Stout is an entry level development board based on R-Car H2 SoC (R8A7790)

This commit supports the following peripherals:
- SCIFA, I2C, Ethernet, QSPI, SDHI0/2, CPLD

Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/arch/arm/cpu/armv7/rmobile/Kconfig b/arch/arm/cpu/armv7/rmobile/Kconfig
index ef56286..85c06eb 100644
--- a/arch/arm/cpu/armv7/rmobile/Kconfig
+++ b/arch/arm/cpu/armv7/rmobile/Kconfig
@@ -40,6 +40,11 @@
 	select DM
 	select DM_SERIAL
 
+config TARGET_STOUT
+	bool "Stout board"
+	select DM
+	select DM_SERIAL
+
 endchoice
 
 config SYS_SOC
@@ -47,7 +52,7 @@
 
 config RMOBILE_EXTRAM_BOOT
 	bool "Enable boot from RAM"
-	depends on TARGET_ALT || TARGET_KOELSCH || TARGET_LAGER || TARGET_PORTER || TARGET_SILK
+	depends on TARGET_ALT || TARGET_KOELSCH || TARGET_LAGER || TARGET_PORTER || TARGET_SILK || TARGET_STOUT
 	default n
 
 choice
@@ -80,5 +85,6 @@
 source "board/renesas/alt/Kconfig"
 source "board/renesas/silk/Kconfig"
 source "board/renesas/porter/Kconfig"
+source "board/renesas/stout/Kconfig"
 
 endif