soc: qcom: stats: fix 64-bit division

soc: qcom: stats: fix 64-bit division

Unguarded 64-bit division is not allowed on 32-bit kernels because this
is very slow. The result of trying anyway is a link failure:

arm-linux-gnueabi-ld: drivers/soc/qcom/qcom_stats.o: in function `qcom_ddr_stats_show':
qcom_stats.c:(.text+0x334): undefined reference to `__aeabi_uldivmod'

As this function is only used for debugging and not performance critical,
rewrite it to use div_u64() instead. ARCH_TIMER_FREQ is a multiple of
MSEC_PER_SEC anyway, so there is no loss in precisison.

Fixes: e84e61bdb97c ("soc: qcom: stats: Add DDR sleep stats")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20231206123717.524009-1-arnd@kernel.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>