runtime: fix image1d buffer allocation.

runtime: fix image1d buffer allocation.

Per bspec, a image should has a at least 2 line vertical alignment,
thus we can't simply attach a buffer to a 1d image surface which has the same size.
We have to create a new image, and copy the buffer data to this new image.
And replace all the buffer object's reference to this image.

Signed-off-by: Zhigang Gong <zhigang.gong@intel.com>
Reviewed-by: He Junyan <junyan.he@inbox.com>