[U-Boot] [v5] new SPL support for IFC based Feescale platforms

[Prabhakar Kushwaha]

This patch series ports existing Freescale's IFC based platforms/boards to
new SPL based architecture. It is done to support NAND boot.
It contains following patches:

 1. powerpc/mpc85xx:No NOR boot,do not compile IFC errata A003399

 2. powerpc/mpc85xx: new SPL support for IFC NAND

 3. board/p1010rdb:Add NAND boot support using new SPL format

 4. board/bsc9131rdb:Add NAND boot support using new SPL format

 5. board/bsc9132qds:Add NAND boot support using new SPL format