qe: add ability to upload QE firmware

[Timur Tabi]

Timur Tabi wrote:
> Define the layout of a binary blob that contains a QE firmware and instructions
> on how to upload it.  Add function qe_upload_microcode() to parse the blob
> and perform the actual upload.  Fully define 'struct rsp' in immap_qe.h to
> include the actual RISC Special Registers.
> 
> Signed-off-by: Timur Tabi <timur at freescale.com>

I need to add a few fields to the structure, but I would still appreciate 
comments on the structure and the corresponding code.

-- 
Timur Tabi
Linux Kernel Developer @ Freescale