ANDROID: GKI: Don't compact fuse_req when CONFIG_VIRTIO_FS=n

Otherwise we cannot enable VIRTIO_FS downstream.

Bug: 161843089
Change-Id: I317b8c425ab96a1bd484b85b41ce3cb036327117
Signed-off-by: Alistair Delva <adelva@google.com>

fs/fuse/fuse_i.h

@@ -356,10 +356,8 @@ struct fuse_req {
 	/** Used to wake up the task waiting for completion of request*/
 	wait_queue_head_t waitq;
 
-#if IS_ENABLED(CONFIG_VIRTIO_FS)
 	/** virtio-fs's physically contiguous buffer for in and out args */
 	void *argbuf;
-#endif
 };
 
 struct fuse_iqueue;