soc: amlogic: clk-measure: Define MSR_CLK's register offset separately

soc: amlogic: clk-measure: Define MSR_CLK's register offset separately

Since the MSR_CLK register offset differs between chip variants, we
replace the macro-based definition with chip-specific assignments.

Change the max_register in regmap_config to be retrieved from DTS.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Chuan Liu <chuan.liu@amlogic.com>
Link: https://lore.kernel.org/r/20250415-clk-measure-v3-1-9b8551dd33b4@amlogic.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>