gl-renderer: move all EGL_PLATFORM_* defines here

Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>

src/compositor-drm.c

@@ -68,10 +68,6 @@
 #define GBM_BO_USE_CURSOR GBM_BO_USE_CURSOR_64X64
 #endif
 
-#ifndef EGL_PLATFORM_GBM_KHR
-#define EGL_PLATFORM_GBM_KHR 0x31D7
-#endif
-
 static int option_current_mode = 0;
 
 enum output_config {

src/compositor-wayland.c

@@ -47,10 +47,6 @@
 
 #define WINDOW_TITLE "Weston Compositor"
 
-#ifndef EGL_PLATFORM_WAYLAND_KHR
-#define EGL_PLATFORM_WAYLAND_KHR 0x31D8
-#endif
-
 struct wayland_compositor {
 	struct weston_compositor base;
 

src/compositor-x11.c

@@ -55,10 +55,6 @@
 
 #define DEFAULT_AXIS_STEP_DISTANCE wl_fixed_from_int(10)
 
-#ifndef EGL_PLATFORM_X11_KHR
-#define EGL_PLATFORM_X11_KHR 0x31D5
-#endif
-
 static int option_width;
 static int option_height;
 static int option_scale;

src/gl-renderer.h

@@ -39,6 +39,18 @@ typedef intptr_t EGLNativeDisplayType;
 typedef intptr_t EGLNativeWindowType;
 #define EGL_DEFAULT_DISPLAY ((EGLNativeDisplayType)0)
 
+#endif /* ENABLE_EGL */
+
+#ifndef EGL_PLATFORM_GBM_KHR
+#define EGL_PLATFORM_GBM_KHR 0x31D7
+#endif
+
+#ifndef EGL_PLATFORM_WAYLAND_KHR
+#define EGL_PLATFORM_WAYLAND_KHR 0x31D8
+#endif
+
+#ifndef EGL_PLATFORM_X11_KHR
+#define EGL_PLATFORM_X11_KHR 0x31D5
 #endif
 
 enum gl_renderer_border_side {