dtc: bump to version 1.4.7

Signed-off-by: Yousong Zhou <zhouyousong@yunionyun.com>

libs/dtc/Makefile

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2016 Yousong Zhou <yszhou4tech@gmail.com>
+# Copyright (C) 2016-2018 Yousong Zhou <yszhou4tech@gmail.com>
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
@@ -8,10 +8,10 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=dtc
-PKG_VERSION:=1.4.6
-PKG_RELEASE:=2
+PKG_VERSION:=1.4.7
+PKG_RELEASE:=1
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
-PKG_HASH:=382302bfcc3c40734be80ac620983971d911ec4cde798f551873f3eb008c7b7e
+PKG_HASH:=6643e8f00ff86350f465bb54b2185058b5b1b7bac01a0842c81a52b86589cde7
 PKG_SOURCE_URL:=@KERNEL/software/utils/dtc
 PKG_LICENSE:=GPL-2.0
 PKG_LICENSE_FILES:=GPL