SDL: Fix "implicit declaration" with memalign

SDL Commits
1 
From a152e467b1ce1fdbc4c60dc2a67cfab915ff01a3 Mon Sep 17 00:00:00 2001
From: Daniel Santos <[EMAIL REDACTED]>
Date: Thu, 7 Jul 2022 12:09:12 -0300
Subject: [PATCH] Fix "implicit declaration" with memalign

---
 src/render/ps2/SDL_render_ps2.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/render/ps2/SDL_render_ps2.c b/src/render/ps2/SDL_render_ps2.c
index 9ba671f6a3d..8eb5f2358f3 100644
--- a/src/render/ps2/SDL_render_ps2.c
+++ b/src/render/ps2/SDL_render_ps2.c
@@ -26,6 +26,7 @@
 #include "SDL_hints.h"
 
 #include <kernel.h>
+#include <malloc.h>
 #include <gsKit.h>
 #include <dmaKit.h>
 #include <gsToolkit.h>