patches: add x265.patch

Fix policy definitions and minimum required CMake version in
CMakeLists.txt so that we can build using riscv64 wheels.

Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>

Author: threexc

patches/x265.patch

@@ -0,0 +1,24 @@
+diff --git a/source/CMakeLists.txt b/source/CMakeLists.txt
+index 95218f5dc..badebb111 100755
+--- a/source/CMakeLists.txt
++++ b/source/CMakeLists.txt
+@@ -6,18 +6,12 @@ if(NOT CMAKE_BUILD_TYPE)
+         FORCE)
+ endif()
+ message(STATUS "cmake version ${CMAKE_VERSION}")
+-if(POLICY CMP0025)
+-    cmake_policy(SET CMP0025 OLD) # report Apple's Clang as just Clang
+-endif()
+ if(POLICY CMP0042)
+     cmake_policy(SET CMP0042 NEW) # MACOSX_RPATH
+ endif()
+-if(POLICY CMP0054)
+-    cmake_policy(SET CMP0054 OLD) # Only interpret if() arguments as variables or keywords when unquoted
+-endif()
+ 
+ project (x265)
+-cmake_minimum_required (VERSION 2.8.8) # OBJECT libraries require 2.8.8
++cmake_minimum_required (VERSION 4.2.1) # OBJECT libraries require 2.8.8
+ include(CheckIncludeFiles)
+ include(CheckFunctionExists)
+ include(CheckSymbolExists)