BootAnimation: Use npot textures

If non power of two textures are supported, then use
npot texture for specifying the images supplied by vendor.
This will reduce the memory footprint of the app by a considerable
amount.

Bug: 28865582
Bug: 30040263
Change-Id: I5cef98fb013318d60d8a648041c9665da68c0ff3
diff --git a/cmds/bootanimation/BootAnimation.h b/cmds/bootanimation/BootAnimation.h
index a093c9b..85724f4 100644
--- a/cmds/bootanimation/BootAnimation.h
+++ b/cmds/bootanimation/BootAnimation.h
@@ -130,6 +130,7 @@
     Texture     mClock;
     int         mWidth;
     int         mHeight;
+    bool        mUseNpotTextures = false;
     EGLDisplay  mDisplay;
     EGLDisplay  mContext;
     EGLDisplay  mSurface;