SDL: cmake: add openbsd wscons sources to build, if supported

SDL Commits
1 
From 3fb512417405e470e5f957fc76db0cc1358436db Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Wed, 22 Nov 2023 05:10:02 +0300
Subject: [PATCH] cmake: add openbsd wscons sources to build, if supported

---
 CMakeLists.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 64e29e888a48..bb7e27c36917 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1646,6 +1646,11 @@ elseif(UNIX AND NOT APPLE AND NOT RISCOS AND NOT HAIKU)
       list(APPEND SOURCE_FILES "${SDL2_SOURCE_DIR}/src/core/freebsd/SDL_evdev_kbd_freebsd.c")
     endif()
 
+    if(HAVE_INPUT_WSCONS)
+      list(APPEND SOURCE_FILES "${SDL2_SOURCE_DIR}/src/core/openbsd/SDL_wscons_kbd.c")
+      list(APPEND SOURCE_FILES "${SDL2_SOURCE_DIR}/src/core/openbsd/SDL_wscons_mouse.c")
+    endif()
+
     # Always compiled for Linux, unconditionally:
     list(APPEND SOURCE_FILES "${SDL2_SOURCE_DIR}/src/core/linux/SDL_evdev_capabilities.c")
     list(APPEND SOURCE_FILES "${SDL2_SOURCE_DIR}/src/core/linux/SDL_threadprio.c")