arm: tegra: fix all the warnings _la.c code

arm: tegra:  fix all the warnings _la.c code

pointers are not U32
use correct casting
min requires types match to return correct value

Change-Id: I0db0903b845bc9a5c310e657c8c60ebb5ece78ba
Signed-off-by: Philip Rakity <prakity@nvidia.com>
Reviewed-on: http://git-master/r/269684
Reviewed-by: Adeel Raza <araza@nvidia.com>
Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Tested-by: Bharat Nihalani <bnihalani@nvidia.com>