update BoardConfig

- build emulator opengl driver as well
- use the common goldfish egl.cfg

Change-Id: Ia7ee630054cf0d0d8511c18909665bf9a54bbe30
diff --git a/BoardConfig.mk b/BoardConfig.mk
index 2fcc495..8ee8c62 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -8,7 +8,8 @@
 
 # Build OpenGLES emulation libraries
 BUILD_EMULATOR_OPENGL := true
+BUILD_EMULATOR_OPENGL_DRIVER := true
 
 # share the same one across all mini-emulators
-BOARD_EGL_CFG := device/generic/mini-emulator-armv7-a-neon/egl.cfg
+BOARD_EGL_CFG := device/generic/goldfish/opengl/system/egl/egl.cfg