cboot-t19x: restore patch for bmp A/B support
cboot-t19x: restore patch for bmp A/B support

that got missed during the L4T R32.6.1 update.

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

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