clk: meson: a1: pll: determine maximum register in regmap config

When the max_register value is not set, the regmap debugfs 'registers'
file does not display the entire range of the regmap.

Signed-off-by: Dmitry Rokosov <ddrokosov@salutedevices.com>
Link: https://lore.kernel.org/r/20240320155512.3544-3-ddrokosov@salutedevices.com
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>

drivers/clk/meson/a1-pll.c

@@ -299,6 +299,7 @@ static struct regmap_config a1_pll_regmap_cfg = {
 	.reg_bits   = 32,
 	.val_bits   = 32,
 	.reg_stride = 4,
+	.max_register = ANACTRL_HIFIPLL_STS,
 };
 
 static struct meson_clk_hw_data a1_pll_clks = {