libmad: add patch from upstream for cmake compatibility

media-libs/libmad/libmad-0.16.4.recipe

@@ -11,6 +11,7 @@ REVISION="1"
 SOURCE_URI="https://codeberg.org/tenacityteam/libmad/archive/$portVersion.tar.gz"
 CHECKSUM_SHA256="f4eb229452252600ce48f3c2704c9e6d97b789f81e31c37b0c67dd66f445ea35"
 SOURCE_DIR="libmad"
+PATCHES="libmad-$portVersion.patchset"
 
 ARCHITECTURES="all"
 SECONDARY_ARCHITECTURES="x86_gcc2 x86"

media-libs/libmad/patches/libmad-0.16.4.patchset

@@ -0,0 +1,27 @@
+From b51044d77433c46046b004c922c006a67f00e215 Mon Sep 17 00:00:00 2001
+From: Be <be@mixxx.org>
+Date: Wed, 14 Feb 2024 18:18:49 -0600
+Subject: bump CMake minimum version to 3.5.0
+
+to fix warning
+
+CMake Deprecation Warning at CMakeLists.txt:1 (cmake_minimum_required):
+  Compatibility with CMake < 3.5 will be removed from a future version of
+  CMake.
+
+  Update the VERSION argument <min> value or use a ...<max> suffix to tell
+  CMake that the project does not need compatibility with older versions.
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index eb701cf..9d4b842 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -1,4 +1,4 @@
+-cmake_minimum_required(VERSION 3.1.0)
++cmake_minimum_required(VERSION 3.5.0)
+ project(mad VERSION 0.16.4)
+ 
+ option(BUILD_SHARED_LIBS "Build dynamic library" ON)
+-- 
+2.50.1
+