Ports: Update genemu's patches to use git patches

This required splitting the single patch file up, which was done with
_some_ degree of accuracy (but not entirely so).

Ports/genemu/patches/0005-Use-software-rendering.patch

@@ -0,0 +1,32 @@
+From ca395dd67bfc14dcfe769b42f2ec2d3107987cab Mon Sep 17 00:00:00 2001
+From: Ali Mohammad Pur <ali.mpfard@gmail.com>
+Date: Mon, 16 May 2022 15:32:14 +0430
+Subject: [PATCH 5/5] Use software rendering
+
+---
+ hw.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/hw.c b/hw.c
+index 6b864df..1f34423 100644
+--- a/hw.c
++++ b/hw.c
+@@ -1,5 +1,5 @@
+ #include "hw.h"
+-#include <SDL.h>
++#include <SDL2/SDL.h>
+ #include <assert.h>
+ #include <time.h>
+ 
+@@ -105,7 +105,7 @@ void hw_enable_video(int enable)
+         screen = SDL_CreateWindow("Genemu - Sega Genesis Emulator",
+             SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
+             WINDOW_WIDTH, WINDOW_WIDTH*3/4, SDL_WINDOW_RESIZABLE);
+-        renderer = SDL_CreateRenderer(screen, -1, SDL_RENDERER_PRESENTVSYNC);
++        renderer = SDL_CreateRenderer(screen, -1, SDL_RENDERER_SOFTWARE);
+ 
+         SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "nearest");  // make the scaled rendering look smoother.
+         SDL_RenderSetLogicalSize(renderer, 320, 240);
+-- 
+2.36.1
+