reset: amlogic: make parameters unsigned

register count and offset cannot be negative. Use unsigned integer
for this.

Suggested-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20240910-meson-rst-aux-v5-3-60be62635d3e@baylibre.com


Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>