at91: Enable slow master clock on meesc board

Normally the processor clock has a divisor of 2.
In some cases this this needs to be set to 4.
Check the user has set environment mdiv to 4 to change th

at91: Enable slow master clock on meesc board

Normally the processor clock has a divisor of 2.
In some cases this this needs to be set to 4.
Check the user has set environment mdiv to 4 to change the divisor.

Signed-off-by: Daniel Gorsulowski <Daniel.Gorsulowski@esd.eu>

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at91: Update MEESC board support

This patch implements several updates:
-disable CONFIG_ENV_OVERWRITE
-add new hardware style variants and set the arch numbers appropriate
-pass the serial# and hard

at91: Update MEESC board support

This patch implements several updates:
-disable CONFIG_ENV_OVERWRITE
-add new hardware style variants and set the arch numbers appropriate
-pass the serial# and hardware revision to the kernel
-removed unused macros from include/configs/meesc.h
-fixed multiline comment style

Signed-off-by: Daniel Gorsulowski <Daniel.Gorsulowski@esd.eu>

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at91: Add esd gmbh MEESC board support

This patch adds support for esd gmbh MEESC board.
The MEESC is based on an Atmel AT91SAM9263 SoC.

Signed-off-by: Daniel Gorsulowski <Daniel.Gorsulowski@esd.eu>