Added stubs for simple Steam Controller support

configure

@@ -16846,6 +16846,7 @@ fi
 SOURCES="$SOURCES $srcdir/src/*.c"
 SOURCES="$SOURCES $srcdir/src/atomic/*.c"
 SOURCES="$SOURCES $srcdir/src/audio/*.c"
+SOURCES="$SOURCES $srcdir/src/audio/marvell/*.c"
 SOURCES="$SOURCES $srcdir/src/cpuinfo/*.c"
 SOURCES="$SOURCES $srcdir/src/dynapi/*.c"
 SOURCES="$SOURCES $srcdir/src/events/*.c"
@@ -23839,6 +23840,7 @@ $as_echo "#define SDL_AUDIO_DRIVER_ANDROID 1" >>confdefs.h
 $as_echo "#define SDL_JOYSTICK_LINUX 1" >>confdefs.h
 
                 SOURCES="$SOURCES $srcdir/src/joystick/linux/*.c"
+                SOURCES="$SOURCES $srcdir/src/joystick/steam/*.c"
                 have_joystick=yes
             ;;
             android)