Split platform functions from entrypoints

Test: Built, flashed, ran some GLES apps
Bug: 110883880
Change-Id: I8697002582c9ca4deea926c298c5e9ab7ac39580
diff --git a/opengl/libs/Android.bp b/opengl/libs/Android.bp
index 78309d4..fb6a221 100644
--- a/opengl/libs/Android.bp
+++ b/opengl/libs/Android.bp
@@ -141,6 +141,7 @@
         "EGL/egl_display.cpp",
         "EGL/egl_object.cpp",
         "EGL/egl.cpp",
+        "EGL/eglApi.cpp",
         "EGL/egl_platform_entries.cpp",
         "EGL/Loader.cpp",
         "EGL/egl_angle_platform.cpp",