Fix printk format warning in clocksource/acpi_pm.c

For real, this time.  The earlier attempt just moved the warning around.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/clocksource/acpi_pm.c

@@ -227,7 +227,7 @@ static int __init parse_pmtmr(char *arg)
 	if (strict_strtoul(arg, 16, &base))
 		return -EINVAL;
 
-	printk(KERN_INFO "PMTMR IOPort override: 0x%04x -> 0x%04x\n",
+	printk(KERN_INFO "PMTMR IOPort override: 0x%04x -> 0x%04lx\n",
 	       (unsigned int)pmtmr_ioport, base);
 	pmtmr_ioport = base;