modules: update FindEGL.cmake to work on iOS.

It actually finds EAGL, which is slightly completely different from EGL
and I currently have no use for it.

modules/FindEGL.cmake

@@ -35,11 +35,19 @@
 # Library
 find_library(EGL_LIBRARY NAMES
     EGL
-    libEGL) # ANGLE (CMake doesn't search for lib prefix on Windows)
+
+    # ANGLE (CMake doesn't search for lib prefix on Windows)
+    libEGL
+
+    # On iOS a part of OpenGLES
+    OpenGLES)
 
 # Include dir
-find_path(EGL_INCLUDE_DIR
+find_path(EGL_INCLUDE_DIR NAMES
-    NAMES EGL/egl.h)
+    EGL/egl.h
+
+    # iOS
+    EAGL.h)
 
 include(FindPackageHandleStandardArgs)
 find_package_handle_standard_args("EGL" DEFAULT_MSG