[U-Boot] at91sam9263ek: add mmc support

[Andreas Bießmann]

Dear Andreas Henriksson,

Andreas Henriksson <andreas.henriksson at endian.se> writes:
>Add support for using the Atmel MCI driver on at91sam9263ek.
>This change is modeled after the existing at91sam9260ek support.
>
>Please note that this hooks up slot1 (MCI1) for SD. Not both.
>
>Tested with at91bootstrap and u-boot on dataflash in slot 0
>and fat-formatted 8GB SDHC in slot 1 on first revision
>at91sam9263ek (which must use dataflash in slot0 to boot).
>
>CONFIG_ATMEL_MCI_PORTB not tested.
>
>Signed-off-by: Andreas Henriksson <andreas.henriksson at endian.se>
>---
>arch/arm/cpu/arm926ejs/at91/at91sam9263_devices.c |   26 +++++++++++++++++++++
> board/atmel/at91sam9263ek/at91sam9263ek.c         |   10 ++++++++
> include/configs/at91sam9263ek.h                   |   13 ++++++++++
> 3 files changed, 49 insertions(+), 0 deletions(-)

applied with a small whitespace fix to u-boot-atmel/master, thanks!

Best regards,
Andreas Bießmann