ports: Replace SDL2 with sdl2-compat

There is no need to keep two SDL versions around

ports/sdl2-compat/build.sh

@@ -0,0 +1,24 @@
+#!/bin/bash ../install.sh
+
+NAME='sdl2-compat'
+VERSION='2.32.70'
+DOWNLOAD_URL="https://github.com/libsdl-org/sdl2-compat/releases/download/release-$VERSION/sdl2-compat-$VERSION.tar.gz#998fa62557eb46ffe7e5c3e2c123bc332f7df9d9f593b3ceed88ed1158428a44"
+DEPENDENCIES=('SDL3')
+
+configure() {
+	cmake --fresh -S . -B build -G Ninja \
+		--toolchain="$BANAN_TOOLCHAIN_DIR/Toolchain.txt" \
+		-DCMAKE_INSTALL_PREFIX='/usr' \
+		-DCMAKE_BUILD_TYPE=Release \
+		-DSDL2COMPAT_X11=OFF \
+		 || exit 1
+}
+
+build() {
+	cmake --build build || exit 1
+}
+
+install() {
+	DESTDIR="$DESTDIR" cmake --install build || exit 1
+	ln -s sdl2-compat.pc "$DESTDIR"/usr/lib/pkgconfig/sdl2.pc || exit 1
+}