Fixes for NXP T1024 and booting Integrity OS

[dgarske]

Fixes for NXP T1024 and booting Integrity OS:

• Fixed PPC spin table based on ePAPR 1.1.
• Added flattened device tree (FDT) support. Setting required FDT fields per ePAPR 1.1.
• Added Frame Manager microcode upload.
• Fixed CPLD and setting QE clock.
• Added support for setting logical device numbers and updated device tree.
• Fixed QUICC Engine base address (was incorrect, should be 0x140000).
• Fixed "cpu-release-addr" to use 64-bit value.
• Added secondary cached boot page.
• Added L2 cache support to multi-core.
• Added flattened device tree parser tool for testing (make fdt-parser and tools/fdt-parser/fdt-parser).
• Added checks for FDT header.
• Added automated test case for NXP T1024 FDT.