arm: lpc32xx: add EA LPC3250 DevKitv2 board support

Add basic support for running U-Boot on the Embedded Artists LPC3250
Developer's Kit v2 board by launching U-Boot from the board's s1l loader
(which comes pre-installed on the board).

Signed-off-by: Trevor Woerner <twoerner@gmail.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index da4d0ed..59d8078 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -1117,6 +1117,8 @@
 
 dtb-$(CONFIG_TARGET_IMX8MM_CL_IOT_GATE) += imx8mm-cl-iot-gate.dtb
 
+dtb-$(CONFIG_TARGET_EA_LPC3250DEVKITV2) += lpc3250-ea3250.dtb
+
 targets += $(dtb-y)
 
 # Add any required device tree compiler flags here