s390/irq,nmi: Include <asm/vtime.h> header directly

update_timer_sys() and update_timer_mcck() are inlines used for
CPU time accounting from the interrupt and machine-check handlers.
These routines are specific to s390 architecture, but included
via <linux/vtime.h> header implicitly. Avoid the extra loop and
include <asm/vtime.h> header directly.

Signed-off-by: Alexander Gordeev <[e-mail]>
Signed-off-by: Ingo Molnar <[e-mail]>
Acked-by: Heiko Carstens <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

arch/s390/kernel/irq.c

···
 #include <asm/hw_irq.h>
 #include <asm/stacktrace.h>
 #include <asm/softirq_stack.h>
+#include <asm/vtime.h>
 #include "entry.h"
 
 DEFINE_PER_CPU_SHARED_ALIGNED(struct irq_stat, irq_stat);

arch/s390/kernel/nmi.c

···
 #include <asm/crw.h>
 #include <asm/asm-offsets.h>
 #include <asm/pai.h>
+#include <asm/vtime.h>
 
 struct mcck_struct {
 	unsigned int kill_task : 1;