U-Boot-V2:Bitops: asm-generic bitops ...

This introduces selected generic bitop files from
kernel. We don't need minix, ext2, sched or lock
based bitops. Those have been dropped.

Signed-off-by: Nishanth Menon <x0nishan@ti.com>

add basic at91sam9260 support. Currently only second stage ...

bootloader is supported:
- No SDRAM initialisation
- No UART init / baudrate change

[memory layout]: streamline memory layout ...

Memory layout can now be specified via kconfig options. Two
possibilities exist: default layout means the layout is stack
/ malloc heap / U-Boot. The user can also specify fixed addresses
for each TEXT_BASE / stack / malloc heap.

[arm] remove unsused sections while linking

__u_boot__symtab -> __usymtab

Resolve the symbols using an extra section and only resolve explicitly ...

exported symbols. Using kallsyms for this purpose doesn't do it because
kallsyms do not resolve variables. Also the symbol table gets quite
big using kallsyms.

svn_rev_462 ...

- Add help texts for many commands.
- Let the linker sort the command table.
- Add support for multiple argmuments in several commands
  (mkdir, rmdir, rm, cat)

svn_rev_121 ...

implement device parameters

svn_rev_120 ...

implement initcalls

svn_rev_028