Hi Kiran,
There are many options of third-party boards based on the i.MX6 families, like SABRE Lite, RiOTboard, WandBoard, UDOO and others. Based on your particular requirements of SPIs, USB connectivity, GPIOs and Android BPS, it seems that the better options could be either the Wandboard or the UDOO Quad boards. Please take a look at the following links:
http://www.wandboard.org/
http://shop.udoo.org/other/home/udoo-quad.html
Hope this will be useful for you.
Best regards!
/Carlos
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