a94069 - Make tegra inherit armv7-generic, fix and re-enable tegra

Authored and Committed by pbrobinson 6 years ago
    - Make tegra inherit armv7-generic, fix and re-enable tegra
    - Enable SPI on ARM
    - Drop config-arm-generic
    - ARM config updates
    
        
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+2 -5
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-524
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+0 -55
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+7 -2
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+170 -20
config-armv7-tegra config-arm-tegra
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+10 -11