Add bootloader debug driver which provides debug functionality from user space. bug 3583607 Change-Id: I8bdd2712e755b370b3e157bcdcd3329122729fea Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2708549 Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>