dtc: update to 1.7.1

log:
- https://github.com/dgibson/dtc/compare/v1.7.0...v1.7.1

drop now unnecessary patch:
- a3dc9f006a

packages/tools/dtc/package.mk

@@ -3,11 +3,11 @@
 # Copyright (C) 2016-present Team LibreELEC (https://libreelec.tv)
 
 PKG_NAME="dtc"
-PKG_VERSION="1.7.0"
-PKG_SHA256="8bca9b594702267d84453e530cc974b7f8e06aea7e60d65614d4bf23be3167d2"
+PKG_VERSION="1.7.1"
+PKG_SHA256="398098bac205022b39d3dce5982b98c57f1023f3721a53ebcbb782be4cf7885e"
 PKG_LICENSE="GPL"
 PKG_SITE="https://git.kernel.org/pub/scm/utils/dtc/dtc.git/"
-PKG_URL="https://git.kernel.org/pub/scm/utils/dtc/dtc.git/snapshot/${PKG_VERSION}.tar.gz"
+PKG_URL="https://www.kernel.org/pub/software/utils/dtc/dtc-${PKG_VERSION}.tar.xz"
 PKG_DEPENDS_HOST="make:host flex:host ninja:host"
 PKG_DEPENDS_TARGET="make:host gcc:host ninja:host"
 PKG_LONGDESC="The Device Tree Compiler"

packages/tools/dtc/patches/dtc-0001-libfdt-soname-version.patch

@@ -1,13 +0,0 @@
-diff --git a/libfdt/Makefile.libfdt b/libfdt/Makefile.libfdt
-index e546397..dd71746 100644
---- a/libfdt/Makefile.libfdt
-+++ b/libfdt/Makefile.libfdt
-@@ -10,7 +10,7 @@ LIBFDT_VERSION = version.lds
- LIBFDT_SRCS = fdt.c fdt_ro.c fdt_wip.c fdt_sw.c fdt_rw.c fdt_strerror.c fdt_empty_tree.c \
- 	fdt_addresses.c fdt_overlay.c fdt_check.c
- LIBFDT_OBJS = $(LIBFDT_SRCS:%.c=%.o)
--LIBFDT_LIB = libfdt-$(DTC_VERSION).$(SHAREDLIB_EXT)
-+LIBFDT_LIB = libfdt.$(SHAREDLIB_EXT)
- 
- libfdt_clean:
- 	@$(VECHO) CLEAN "(libfdt)"