use KERNEL_LOCK wrappers in arch/amd64

[David Gwynne]

we have wrappers around these now. ok?

Index: arch/amd64/amd64/intr.c
===================================================================
RCS file: /cvs/src/sys/arch/amd64/amd64/intr.c,v
retrieving revision 1.48
diff -u -p -r1.48 intr.c
--- arch/amd64/amd64/intr.c     22 Jun 2016 01:12:38 -0000      1.48
+++ arch/amd64/amd64/intr.c     23 Feb 2017 06:04:37 -0000
@@ -527,7 +527,7 @@ intr_handler(struct intrframe *frame, st
                need_lock = frame->if_ppl < IPL_SCHED;
 
        if (need_lock)
-               __mp_lock(&kernel_lock);
+               KERNEL_LOCK();
 #endif
        floor = ci->ci_handled_intr_level;
        ci->ci_handled_intr_level = ih->ih_level;
@@ -535,7 +535,7 @@ intr_handler(struct intrframe *frame, st
        ci->ci_handled_intr_level = floor;
 #ifdef MULTIPROCESSOR
        if (need_lock)
-               __mp_unlock(&kernel_lock);
+               KERNEL_UNLOCK();
 #endif
        return rc;
 }
Index: arch/amd64/amd64/ipifuncs.c
===================================================================
RCS file: /cvs/src/sys/arch/amd64/amd64/ipifuncs.c,v
retrieving revision 1.28
diff -u -p -r1.28 ipifuncs.c
--- arch/amd64/amd64/ipifuncs.c 23 Nov 2015 22:57:12 -0000      1.28
+++ arch/amd64/amd64/ipifuncs.c 23 Feb 2017 06:04:37 -0000
@@ -113,7 +113,7 @@ void
 x86_64_ipi_halt(struct cpu_info *ci)
 {
        SCHED_ASSERT_UNLOCKED();
-       KASSERT(!__mp_lock_held(&kernel_lock));
+       KERNEL_ASSERT_UNLOCKED();
        
        fpusave_cpu(ci, 1);
        disable_intr();