binutils: fix compiling with arch-based distros

Arch Linux users have encountered problems with packages that have a dependency on binutils. This error happens when libtool is doing:
  libtool: relink: ...
So change PKG_FIXUP to "patch-libtool".

Fixes error in the form of:
  libtool: install: error: relink `libctf.la' with the above command
           before installing it

Upstream Bug:
https://sourceware.org/bugzilla/show_bug.cgi?id=28545

OpenWrt Bug:
https://bugs.openwrt.org/index.php?do=details&task_id=4149

Acked-by: John Audia <graysky@archlinux.us>
Signed-off-by: Nick Hainke <vincent@systemli.org>

package/devel/binutils/Makefile

@@ -9,14 +9,14 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=binutils
 PKG_VERSION:=2.37
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE_URL:=@GNU/binutils
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_VERSION:=$(PKG_VERSION)
 PKG_HASH:=820d9724f020a3e69cb337893a0b63c2db161dadcb0e06fc11dc29eb1e84a32c
 
-PKG_FIXUP:=autoreconf
+PKG_FIXUP:=patch-libtool
 PKG_LIBTOOL_PATHS:=. gas bfd opcodes gprof binutils ld libiberty gold intl
 PKG_REMOVE_FILES:=libtool.m4
 PKG_INSTALL:=1