clocksource/drivers/sprd: Enable register for timer counter from 32 bit to 64 bit

clocksource/drivers/sprd: Enable register for timer counter from 32 bit to 64 bit

Using 32 bit for suspend compensation, the max compensation time is 36
hours(working clock is 32k).In some IOT devices, the suspend time may
be long, even exceeding 36 hours. Therefore, a 64 bit timer counter
is needed for counting.

Signed-off-by: Enlin Mu <enlin.mu@unisoc.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Link: https://patch.msgid.link/20251106021830.34846-1-enlin.mu@linux.dev