ARM: ts4600: add basic board support

This commit adds basic support including:
MMC, Serial console

Signed-off-by: Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 220022b..ed25e35 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -574,6 +574,11 @@
 	select USB_KEYBOARD if DISTRO_DEFAULTS
 	select USE_TINY_PRINTF
 
+config TARGET_TS4600
+	bool "Support TS4600"
+	select CPU_ARM926EJS
+	select SUPPORT_SPL
+
 config TARGET_TS4800
 	bool "Support TS4800"
 	select CPU_V7
@@ -1025,6 +1030,7 @@
 source "board/timll/devkit3250/Kconfig"
 source "board/toradex/colibri_pxa270/Kconfig"
 source "board/toradex/colibri_vf/Kconfig"
+source "board/technologic/ts4600/Kconfig"
 source "board/technologic/ts4800/Kconfig"
 source "board/vscom/baltos/Kconfig"
 source "board/woodburn/Kconfig"