x86: UV, SGI RTC: fix uv_time.c for UP

Fix non-smp build of uv_time.c.
Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
LKML-Reference: <20090304220246.GC6288@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/uv_time.c

@@ -24,6 +24,8 @@
 #include <asm/uv/uv_hub.h>
 #include <asm/uv/bios.h>
 #include <asm/uv/uv.h>
+#include <asm/apic.h>
+#include <asm/cpu.h>
 
 #define RTC_NAME		"sgi_rtc"
 
@@ -84,7 +86,7 @@ static void uv_rtc_send_IPI(int cpu)
 	unsigned long apicid, val;
 	int pnode;
 
-	apicid = per_cpu(x86_cpu_to_apicid, cpu);
+	apicid = cpu_physical_id(cpu);
 	pnode = uv_apicid_to_pnode(apicid);
 	val = (1UL << UVH_IPI_INT_SEND_SHFT) |
 	      (apicid << UVH_IPI_INT_APIC_ID_SHFT) |