ARM64: configs: tegra: enable SLUB allocator

ARM64: configs: tegra: enable SLUB allocator

Slub allocator always includes full debugging capabilities and is
good for bringup kernel. Upstream uses slub as the default allocator.

Few debug capabilities include out of object access checking, tracing
allocations for a given slab, write after free tracking etc.

Bug 200118248

Change-Id: I18602edf71676b489afb25cb6b022b5cb4acc8a6
Signed-off-by: Vaibhav Shinde <vashinde@nvidia.com>
Reviewed-on: http://git-master/r/767483
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Sri Krishna Chowdary <schowdary@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>