platform: tegra: Add new config TEGRA_PROD_LEGACY

commit 63980b4c85827a0f2a29b3103f555b14051d446d from
https://nv-tegra.nvidia.com/r/3rdparty/canonical/linux-jammy.git jetson_36.3

BugLink: https://bugs.launchpad.net/bugs/2042935

There is the new implementation of prod configuration
and to differentiate the current vs new implementation
in the common drivers, add new config as TEGRA_PROD_LEGACY.

http://nvbugs/3389584

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-by: Krishna Yarlagadda <kyarlagadda@nvidia.com>
Acked-by: Jacob Martin <jacob.martin@canonical.com>
Acked-by: Noah Wager <noah.wager@canonical.com>
Signed-off-by: Jacob Martin <jacob.martin@canonical.com>
Signed-off-by: Rajeshkumar Ramasamy <rajeshkumar.ramasamy@windriver.com>