arm: mvebu: Add DB-XC3-24G4XG board

The DB-XC3-24G4XG is a switch development board from Marvell. It can
either use and external CPU card such as the db-88f6820-amc or the
internal CPU that is integrated into the switch.

Add support for running U-Boot on the internal CPU and enable the USB,
SPI and NAND peripherals. For now this needs the bin_hdr from the
Marvell U-Boot for this board.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig
index bb4ca56..f5fd60d 100644
--- a/arch/arm/mach-mvebu/Kconfig
+++ b/arch/arm/mach-mvebu/Kconfig
@@ -152,6 +152,10 @@
 	bool "Support Allied Telesis x530"
 	select 88F6820
 
+config TARGET_DB_XC3_24G4XG
+	bool "Support DB-XC3-24G4XG"
+	select 98DX3336
+
 endchoice
 
 config SYS_BOARD
@@ -170,6 +174,7 @@
 	default "theadorable" if TARGET_THEADORABLE
 	default "a38x" if TARGET_CONTROLCENTERDC
 	default "x530" if TARGET_X530
+	default "db-xc3-24g4xg" if TARGET_DB_XC3_24G4XG
 
 config SYS_CONFIG_NAME
 	default "clearfog" if TARGET_CLEARFOG
@@ -187,6 +192,7 @@
 	default "turris_mox" if TARGET_TURRIS_MOX
 	default "controlcenterdc" if TARGET_CONTROLCENTERDC
 	default "x530" if TARGET_X530
+	default "db-xc3-24g4xg" if TARGET_DB_XC3_24G4XG
 
 config SYS_VENDOR
 	default "Marvell" if TARGET_DB_MV784MP_GP
@@ -195,6 +201,8 @@
 	default "Marvell" if TARGET_DB_88F6820_GP
 	default "Marvell" if TARGET_DB_88F6820_AMC
 	default "Marvell" if TARGET_MVEBU_ARMADA_8K
+	default "Marvell" if TARGET_DB_XC3_24G4XG
+	default "Marvell" if TARGET_MVEBU_DB_88F7040
 	default "solidrun" if TARGET_CLEARFOG
 	default "kobol" if TARGET_HELIOS4
 	default "Synology" if TARGET_DS414