machine/tegra{186,194}.conf: add BUP-related variable settings
machine/tegra{186,194}.conf: add BUP-related variable settings

Signed-off-by: Matt Madison <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@madison.systems>

madisongh/meta-tegra,madisongh/meta-tegra,madisongh/meta-tegra,madisongh/meta-tegra,madisongh/meta-tegra