SDL_mixer: cmake: Add SDL2::mixer alias

SDL Commits
1 
From 4c7eaaf2f1d1dde6a93b03ec1f885037a766a475 Mon Sep 17 00:00:00 2001
From: Charlie Birks <[EMAIL REDACTED]>
Date: Tue, 14 Dec 2021 10:09:49 +0000
Subject: [PATCH] cmake: Add SDL2::mixer alias

---
 CMakeLists.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 259e3903..ea894966 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,6 +26,7 @@ endif()
 include_directories(include src src/codecs)
 
 add_library(SDL2_mixer)
+add_library(SDL2::mixer ALIAS SDL2_mixer)
 
 target_sources(SDL2_mixer PRIVATE
         src/effect_position.c src/effects_internal.c src/effect_stereoreverse.c