memory: tegra: Reword and correct comments

memory: tegra: Reword and correct comments

Fix incorrect comment on periodic_compensation_handler() as the call
update_clock_tree_delay() with DVFS_UPDATE is responsible for dividing
the samples accumulated up to that point and comparing the computed
values with the currently programmed ones. While at it fix the
indentation of a nearby comment.

Signed-off-by: Diogo Ivo <diogo.ivo@tecnico.ulisboa.pt>
Link: https://lore.kernel.org/r/20240704-tegra210_emcfreq-v4-3-3e450503c555@tecnico.ulisboa.pt
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>