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- Dropped the secure stack allocation from the generic PSCI code. There 
was too little space there for it to be really useful, and the arch code 
knows a lot better about its requirements anyway. It is now the 
responsibility of the arch code to provide a stack. This allows it to 
get rid of the silly game with the thread registers that was confusing 
everyone...
- Added provision for FIQ handling in secure mode. Allwinner A20 is 
going to require this for CPU_OFF.
- Better integration of the FDT injection code with the rest of the 
code, fixing the truncated FDT issue that people have been reporting 
(courtesy of Ma Haijun).
- Cleanup of the AW-specific code (stack allocation, timer macro).
- Rebased on mainline U-Boot (on top of 22a240c32c13).