CMake: Move DirectInput backend option to Win32 UI

CMakeLists.txt

@@ -131,7 +131,6 @@ option(RTMIDI       "RtMidi"
 option(FLUIDSYNTH   "FluidSynth"                                                    ON)
 option(MUNT         "MUNT"                                                          ON)
 option(VNC          "VNC renderer"                                                  OFF)
-option(DINPUT       "DirectInput"                                                   OFF)
 option(CPPTHREADS   "C++11 threads"                                                 ON)
 option(NEW_DYNAREC  "Use the PCem v15 (\"new\") dynamic recompiler"                 OFF)
 option(MINITRACE    "Enable Chrome tracing using the modified minitrace library"    OFF)

src/qt/CMakeLists.txt

@@ -190,13 +190,7 @@ endif()
 if(WIN32)
     enable_language(RC)
     target_sources(86Box PUBLIC ../win/86Box-qt.rc)
-    target_sources(plat PRIVATE win_dynld.c)
-    if(DINPUT)
-        target_sources(plat PRIVATE win_joystick.cpp)
-        target_link_libraries(86Box dinput8)
-    else()
-        target_sources(plat PRIVATE win_joystick_rawinput.c)
-    endif()
+    target_sources(plat PRIVATE win_dynld.c win_joystick_rawinput.c)
     target_link_libraries(86Box hid)
 
     # CMake 3.22 messed this up for clang/clang++

src/win/CMakeLists.txt

@@ -51,6 +51,7 @@ if(NOT MINGW)
     target_sources(plat PRIVATE win_opendir.c)
 endif()
 
+option(DINPUT "Use DirectInput joystick backend instead of raw input" OFF)
 if(DINPUT)
     target_sources(plat PRIVATE win_joystick.cpp)
     target_link_libraries(86Box dinput8)