frr: update to 10.7.1

10.7.1 accepts libyang v3, so frr keeps building against libyang-legacy.
Refresh 997-reverse_python_test.patch, which otherwise applies with an
offset of one line; the other two patches are unchanged.

Signed-off-by: Alexandru Ardelean <alex@shruggie.ro>

net/frr/Makefile

@@ -7,12 +7,12 @@
 
 include $(TOPDIR)/rules.mk
 PKG_NAME:=frr
-PKG_VERSION:=10.6.1
+PKG_VERSION:=10.7.1
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://codeload.github.com/FRRouting/frr/tar.gz/$(PKG_NAME)-$(PKG_VERSION)?
-PKG_HASH:=35f2cb4328617261db687e1d4e400c7c491b41b3aa4a109d7da9ebff0cf7e402
+PKG_HASH:=6aaf9d89deb94eeda6acceaa6fe48d8cd365d0908231e58f628538ff49696fc4
 
 
 PKG_MAINTAINER:=Lucian Cristian <lucian.cristian@gmail.com>

net/frr/patches/997-reverse_python_test.patch

@@ -1,6 +1,16 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Lucian Cristian <lucian.cristian@gmail.com>
+Date: Mon, 7 Mar 2022 19:26:52 +0200
+Subject: [PATCH] do not look for python when cross-compiling
+
+AM_PATH_PYTHON is only needed for clippy, which is built for the host,
+and it fails the target configure run on OpenWrt.
+
+Upstream-Status: Inappropriate [OpenWrt cross-compile setup]
+---
 --- a/configure.ac
 +++ b/configure.ac
-@@ -979,7 +979,6 @@ AC_DEFINE_UNQUOTED([DFLT_NAME], ["$DFLT_
+@@ -980,7 +980,6 @@ AC_DEFINE_UNQUOTED([DFLT_NAME], ["$DFLT_
  #
  
  AS_IF([test "$host" = "$build"], [