Compiling kernel for Android?

[mikey0000]

The BSP 2.0 package contains kernel source code. I'd apply longsleep patches overtop of the BSP as there are google patches specific to android that won't be in the longsleep kernel (unless it already contains them) and potentially other android specifics as well as the device tree which are not present for the binary blobs (if you were to build the whole android image)

EDIT:
look here http://linux-sunxi.org/SDK_build_howto