gl drm/x11: Fix compilation for EGL < 1.5

This is an attempt at fixing compilation for systems with old
EGL headers (version < 1.5).

Thanks Roy for the report!

src/modules/evas/engines/gl_drm/evas_engine.c

@@ -20,6 +20,10 @@
 
 #define EVAS_GL_UPDATE_TILE_SIZE 16
 
+#ifndef EGL_VERSION_1_5
+typedef intptr_t EGLAttrib;
+#endif
+
 /* external variables */
 int _evas_engine_gl_drm_log_dom = -1;
 int _extn_have_buffer_age = 1;

src/modules/evas/engines/gl_x11/evas_x_main.c

@@ -155,6 +155,10 @@ _visuals_hash_index_get_from_info(Evas_Engine_Info_GL_X11 *info)
 # define EGL_PLATFORM_X11_KHR 0x31D5
 #endif
 
+#ifndef EGL_VERSION_1_5
+typedef intptr_t EGLAttrib;
+#endif
+
 static EGLDisplay *
 _x11_eglGetDisplay(Display *x11_display)
 {