[PATCH -next] pci hotplug: fix ibmphp build error

[Randy Dunlap]

From: Randy Dunlap <randy.dunlap@xxxxxxxxxx>

Add header file to fix build error:

drivers/pci/hotplug/ibmphp_hpc.c:135: error: implicit declaration of function 'init_MUTEX'
drivers/pci/hotplug/ibmphp_hpc.c:136: error: implicit declaration of function 'init_MUTEX_LOCKED'
drivers/pci/hotplug/ibmphp_hpc.c:797: error: implicit declaration of function 'down'
drivers/pci/hotplug/ibmphp_hpc.c:807: error: implicit declaration of function 'up'

Signed-off-by: Randy Dunlap <randy.dunlap@xxxxxxxxxx>
---
 drivers/pci/hotplug/ibmphp_hpc.c |    1 +
 1 file changed, 1 insertion(+)

--- linux-next-20100204.orig/drivers/pci/hotplug/ibmphp_hpc.c
+++ linux-next-20100204/drivers/pci/hotplug/ibmphp_hpc.c
@@ -35,6 +35,7 @@
 #include <linux/init.h>
 #include <linux/mutex.h>
 #include <linux/sched.h>
+#include <linux/semaphore.h>
 #include <linux/kthread.h>
 #include "ibmphp.h"
 
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