BUG_ON() Conversion in kernel/cpu.c

this changes if() BUG(); constructs to BUG_ON() which is
cleaner, contains unlikely() and can better optimized away.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/kernel/cpu.c b/kernel/cpu.c
index e882c6b..8be22bd 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -223,8 +223,7 @@
 	ret = __cpu_up(cpu);
 	if (ret != 0)
 		goto out_notify;
-	if (!cpu_online(cpu))
-		BUG();
+	BUG_ON(!cpu_online(cpu));
 
 	/* Now call notifier in preparation. */
 	notifier_call_chain(&cpu_chain, CPU_ONLINE, hcpu);