rework MMU support

[Sascha Hauer]

This series reworks the barebox MMU support. We now use second
level page tables which allows us to remap the dma coherent area
dynamically. We don't have to map our sdram twice anymore which
helps us on newer systems with big memory.

As a bonus there is no board specific MMU code anymore. All a board
has to do to enable MMU support is to register its SDRAM banks
and call mmu_init().

Sascha Hauer (7):
      ARM cache l2x0: depend on MMU
      ARM: move armlinux_add_dram to location which is always compiled
      ARM l2x0: make init function static inline if l2 is not available
      ARM: pass size to dma_free_coherent
      ARM boards: move sdram setup before mmu setup
      ARM: rework MMU support
      ARM boards: remove now unnecessary mmu calls

 arch/arm/boards/chumby_falconwing/falconwing.c    |   21 +--
 arch/arm/boards/eukrea_cpuimx25/eukrea_cpuimx25.c |   28 +---
 arch/arm/boards/eukrea_cpuimx27/eukrea_cpuimx27.c |   26 +--
 arch/arm/boards/eukrea_cpuimx35/eukrea_cpuimx35.c |   25 +--
 arch/arm/boards/eukrea_cpuimx51/eukrea_cpuimx51.c |   33 +---
 arch/arm/boards/freescale-mx51-pdk/board.c        |   28 +---
 arch/arm/boards/guf-cupid/board.c                 |   22 +--
 arch/arm/boards/guf-neso/board.c                  |   27 +---
 arch/arm/boards/karo-tx25/board.c                 |   38 ++---
 arch/arm/boards/karo-tx28/tx28.c                  |   21 +--
 arch/arm/boards/panda/board.c                     |   18 +--
 arch/arm/boards/pcm037/pcm037.c                   |   42 ++----
 arch/arm/boards/pcm038/pcm038.c                   |   27 +--
 arch/arm/boards/pcm043/pcm043.c                   |   25 +--
 arch/arm/boards/pcm049/board.c                    |   21 +--
 arch/arm/boards/phycard-i.MX27/pca100.c           |   25 +--
 arch/arm/boards/scb9328/env/config                |   56 +++++++
 arch/arm/cpu/Kconfig                              |    2 +-
 arch/arm/cpu/cpu.c                                |   14 ++
 arch/arm/cpu/mmu.c                                |  177 +++++++++++++++++----
 arch/arm/include/asm/armlinux.h                   |    7 +-
 arch/arm/include/asm/memory.h                     |   24 ++--
 arch/arm/include/asm/mmu.h                        |   35 ++++-
 arch/arm/lib/armlinux.c                           |   19 +--
 drivers/usb/gadget/fsl_udc.c                      |    2 +-
 include/common.h                                  |    1 +
 26 files changed, 396 insertions(+), 368 deletions(-)
 create mode 100644 arch/arm/boards/scb9328/env/config