power: supply: intel_dc_ti_battery: fix 64bit divisions

On 32bit builds, I get:
ERROR: modpost: "__udivdi3" [drivers/power/supply/intel_dc_ti_battery.ko] undefined!

This is due to 64bit ktime divisions. Fix both by using div_u64().

Fixes 8c5795fe5527 ("power: supply: Add new Intel Dollar Cove TI battery driver")

---
Cc: Linus Walleij <[email protected]>
Cc: Hans de Goede <[email protected]>
Cc: Sebastian Reichel <[email protected]>

---
  drivers/power/supply/intel_dc_ti_battery.c | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)

drivers/power/supply/intel_dc_ti_battery.c +2 -2

index 56b0c92e9d28..3d38106b638b 100644
@@ -141,7 +141,7 @@ static int dc_ti_battery_get_voltage_and_current_now(struct power_supply *psy, i
  	if (ret)
  		goto out_err;
 
-	cnt_start_usec = ktime_get_ns() / NSEC_PER_USEC;
+	cnt_start_usec = div_u64(ktime_get_ns(), NSEC_PER_USEC);
 
  	/* Read Vbat, convert IIO mV to power-supply ųV */
  	ret = iio_read_channel_processed_scale(chip->vbat_channel, volt, 1000);

@@ -149,7 +149,7 @@ static int dc_ti_battery_get_voltage_and_current_now(struct power_supply *psy, i
  		goto out_err;
 
  	/* Sleep at least 3 sample-times + slack to get 3+ CC samples */
-	now_usec = ktime_get_ns() / NSEC_PER_USEC;
+	now_usec = div_u64(ktime_get_ns(), NSEC_PER_USEC);
  	sleep_usec = 3 * SMPL_INTVL_US + SLEEP_SLACK_US - (now_usec - cnt_start_usec);
  	if (sleep_usec > 0 && sleep_usec < 1000000)
  		usleep_range(sleep_usec, sleep_usec + SLEEP_SLACK_US);