board: ti: am33xx: Add support for BeagleBoard Green Eco

SeeedStudio BeagleBone Green Eco (BBGE) is a clone of the BeagleBone Green
(BBG). It has minor differences from the BBG, such as a different PMIC,
a different Ethernet PHY, and a larger eMMC.

The PMIC is not yet supported in mainline, but the work is ongoing.

Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 82f5c37..c197e3b 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -419,6 +419,7 @@
 	am335x-evm.dtb \
 	am335x-evmsk.dtb \
 	am335x-bonegreen.dtb \
+	am335x-bonegreen-eco.dtb \
 	am335x-bonegreen-wireless.dtb \
 	am335x-icev2.dtb \
 	am335x-pocketbeagle.dtb \