cmake: mark hidapi as disabled when not found

(cherry-picked from commit 19b13aab98)
(cherry-picked from commit c3495ec6ea)
(cherry-picked from commit 6dfd7a17e1)

cmake/sdlchecks.cmake

@@ -1192,6 +1192,7 @@ macro(CheckHIDAPI)
       if(HIDAPI_ONLY_LIBUSB AND NOT HAVE_LIBUSB)
         set(HAVE_HIDAPI FALSE)
       endif()
+      set(HAVE_HIDAPI_LIBUSB ${HAVE_LIBUSB})
     endif()
 
     if(HAVE_HIDAPI)
@@ -1211,6 +1212,8 @@ macro(CheckHIDAPI)
         file(GLOB HIDAPI_JOYSTICK_SOURCES ${SDL2_SOURCE_DIR}/src/joystick/hidapi/*.c)
         list(APPEND SOURCE_FILES ${HIDAPI_JOYSTICK_SOURCES})
       endif()
+    else()
+      set(SDL_HIDAPI_DISABLED 1)
     endif()
   else()
     set(SDL_HIDAPI_DISABLED 1)