SDL: cpuinfo: fix -Wmissing-prototypes warning

From 143b0700749b112cc69e0efbc16b470ead22d49a Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Tue, 2 Apr 2024 18:57:36 +0200
Subject: [PATCH] cpuinfo: fix -Wmissing-prototypes warning

---
 src/cpuinfo/SDL_cpuinfo.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/cpuinfo/SDL_cpuinfo.c b/src/cpuinfo/SDL_cpuinfo.c
index 2270956e182a0..6366f7c9989bf 100644
--- a/src/cpuinfo/SDL_cpuinfo.c
+++ b/src/cpuinfo/SDL_cpuinfo.c
@@ -21,6 +21,8 @@
 
 #include "SDL_internal.h"
 
+#include "SDL_cpuinfo_c.h"
+
 #if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_GDK)
 #include "../core/windows/SDL_windows.h"
 #endif