libfdt: descend from lib/ to lib/libfdt/

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/Makefile b/Makefile
index c4b1381..8a0de5c 100644
--- a/Makefile
+++ b/Makefile
@@ -640,7 +640,6 @@
 libs-y += drivers/usb/phy/
 libs-y += drivers/usb/ulpi/
 libs-y += common/
-libs-y += lib/libfdt/
 libs-$(CONFIG_API) += api/
 libs-$(CONFIG_HAS_POST) += post/
 libs-y += test/
diff --git a/lib/Makefile b/lib/Makefile
index 09b011f..e8635ef 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -13,6 +13,7 @@
 obj-$(CONFIG_ZLIB) += zlib/
 obj-$(CONFIG_BZIP2) += bzip2/
 obj-$(CONFIG_TIZEN) += tizen/
+obj-y += libfdt/
 
 obj-$(CONFIG_AES) += aes.o
 obj-$(CONFIG_USB_TTY) += circbuf.o