gralloc: avoid using framebuffer

Change-Id: I216b4b67f09729d00d337512ab17ff378f218a33

exynos4/hal/libgralloc_ump/alloc_device.cpp

@@ -420,9 +420,17 @@ static int alloc_device_alloc(alloc_device_t* dev, int w, int h, int format,
     const uint32_t bufferMask = m->bufferMask;
     const uint32_t numBuffers = m->numBuffers;
     pthread_mutex_lock(&l_surface);
+
+    // Remove the hardware framebuffer flag to avoid lags
+    usage = usage & ~GRALLOC_USAGE_HW_FB;
+
+/*
+ * Using the framebuffer causes lags, so don't use it at all ;-)
+ *
     if (usage & GRALLOC_USAGE_HW_FB && (bufferMask < ((1LU << numBuffers) - 1)))
         err = gralloc_alloc_framebuffer(dev, size, usage, pHandle, w, h, format, 32);
     else
+*/
         err = gralloc_alloc_buffer(dev, size, usage, pHandle, w, h, format, 0, (int)stride_raw, (int)stride);
 
     pthread_mutex_unlock(&l_surface);