memory: tegra: Sort tegra210_swgroups by reg address

Cleanup the list of swgroups (ordering by register address) to prepare
for new ones.

Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20201008003746.25659-4-nicoleotsuka@gmail.com


Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>