Add ps2_drivers dependency

Fix CI

.github/workflows/ps2.yaml

@@ -11,7 +11,17 @@ jobs:
     - name: Setup dependencies
       run: |
         apk update 
-        apk add cmake gmp mpc1 mpfr4 ninja pkgconf
+        apk add cmake gmp mpc1 mpfr4 ninja pkgconf make git
+
+    # To be removed once ps2_drivers is part of PS2DEV
+    - name: Install ps2_drivers lib
+      run: |
+        git clone https://github.com/fjtrujy/ps2_drivers.git
+        cd ps2_drivers
+        make -j $(getconf _NPROCESSORS_ONLN) clean
+        make -j $(getconf _NPROCESSORS_ONLN)
+        make -j $(getconf _NPROCESSORS_ONLN) install
+
     - name: Configure (CMake)
       run: |
         cmake -S . -B build -G Ninja\
@@ -40,10 +50,12 @@ jobs:
       run: |
         export CC=mips64r5900el-ps2-elf-gcc
         export PATH=${{ env.SDL2_DIR }}/bin:$PATH
+        export EXTRA_LDFLAGS="-L$PS2DEV/ps2sdk/ee/lib -L$PS2DEV/ps2sdk/ports/lib"
         cmake/test/test_sdlconfig.sh
     - name: Verify sdl2.pc
       run: |
         export CC=mips64r5900el-ps2-elf-gcc
+        export EXTRA_LDFLAGS="-L$PS2DEV/ps2sdk/ee/lib -L$PS2DEV/ps2sdk/ports/lib"
         export PKG_CONFIG_PATH=${{ env.SDL2_DIR }}/lib/pkgconfig
         cmake/test/test_pkgconfig.sh