test: fdtdec: test fdtdec_set_carveout()

Add a new test for fdtdec_set_carveout().

Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Drop blank line at EFO:
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/test/dm/Makefile b/test/dm/Makefile
index dd1ceff..53caa29 100644
--- a/test/dm/Makefile
+++ b/test/dm/Makefile
@@ -31,6 +31,7 @@
 obj-$(CONFIG_DM_MAILBOX) += mailbox.o
 obj-$(CONFIG_DM_MMC) += mmc.o
 obj-y += ofnode.o
+obj-y += fdtdec.o
 obj-$(CONFIG_OSD) += osd.o
 obj-$(CONFIG_DM_VIDEO) += panel.o
 obj-$(CONFIG_DM_PCI) += pci.o