Architecture GPIO definitions are included in the main config file now
Added SPI DAC driver, command, env variable
Merge branch 's3ma_integration' of usdul1tfds.corp.exelisinc.com:proj_cs3_uboot into s3ma_integration

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Completed SPI CS functions
DAC environement variable now saved after being created or set
GPIO funtions have been added to gpio.h to make use of them externally
Merge branch 's3ma_integration' of usdul1tfds.corp.exelisinc.com:proj_cs3_uboot into s3ma_integration
Fixed sp3dev.c to include generic gpio.h and cleaned up asm/arch/gpio.h
Merge branch 's3ma_integration' of https://github.com/silverbullettechnology/u-boot-class into s3ma_integration