Update nullegl to support swapbuffers with damage

Change-Id: I4bc4682c624c02f51235a3c4a6b4a6d5b17a3b6f
diff --git a/libs/hwui/debug/nullegl.cpp b/libs/hwui/debug/nullegl.cpp
index b6cc2f2..1ce180dd 100644
--- a/libs/hwui/debug/nullegl.cpp
+++ b/libs/hwui/debug/nullegl.cpp
@@ -68,6 +68,9 @@
 }
 
 const char * eglQueryString(EGLDisplay dpy, EGLint name) {
+    if (name == EGL_EXTENSIONS) {
+        return "EGL_KHR_swap_buffers_with_damage";
+    }
     return "";
 }
 
@@ -148,6 +151,10 @@
     return EGL_TRUE;
 }
 
+EGLBoolean eglSwapBuffersWithDamageKHR(EGLDisplay dpy, EGLSurface surface, EGLint *rects, EGLint rectCount) {
+    return EGL_TRUE;
+}
+
 EGLImageKHR eglCreateImageKHR(EGLDisplay dpy, EGLContext ctx, EGLenum target, EGLClientBuffer buffer, const EGLint *attrib_list) {
     return (EGLImageKHR) malloc(sizeof(EGLImageKHR));
 }