x86, mce: trivial clean up for mce-inject.c

Fix for:

WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
+#include <asm/uaccess.h>

WARNING: usage of NR_CPUS is often wrong - consider using cpu_possible(), num_possible_cpus(), for_each_possible_cpu(), etc
+       if (m.cpu >= NR_CPUS || !cpu_online(m.cpu))

ERROR: trailing whitespace
+/* $
Signed-off-by: NHidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: NH. Peter Anvin <hpa@zytor.com>

arch/x86/kernel/cpu/mcheck/mce-inject.c

@@ -11,13 +11,13 @@
  * Andi Kleen
  * Ying Huang
  */
+#include <linux/uaccess.h>
 #include <linux/module.h>
 #include <linux/timer.h>
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <linux/fs.h>
 #include <linux/smp.h>
-#include <asm/uaccess.h>
 #include <asm/mce.h>
 
 /* Update fake mce registers on current CPU. */
@@ -93,7 +93,7 @@ static ssize_t mce_write(struct file *filp, const char __user *ubuf,
 	if (copy_from_user(&m, ubuf, usize))
 		return -EFAULT;
 
-	if (m.cpu >= NR_CPUS || !cpu_online(m.cpu))
+	if (m.cpu >= num_possible_cpus() || !cpu_online(m.cpu))
 		return -EINVAL;
 
 	dm = kmalloc(sizeof(struct delayed_mce), GFP_KERNEL);