BUG_ON() Conversion in drivers/mtd/

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/drivers/mtd/maps/dilnetpc.c b/drivers/mtd/maps/dilnetpc.c
index b51c757..efb2216 100644
--- a/drivers/mtd/maps/dilnetpc.c
+++ b/drivers/mtd/maps/dilnetpc.c
@@ -218,8 +218,8 @@
 	{
 		if(--vpp_counter == 0)
 			setcsc(CSC_RBWR, getcsc(CSC_RBWR) | 0x4);
-		else if(vpp_counter < 0)
-			BUG();
+		else
+			BUG_ON(vpp_counter < 0);
 	}
 	spin_unlock_irq(&dnpc_spin);
 }
@@ -240,8 +240,8 @@
 	{
 		if(--vpp_counter == 0)
 			setcsc(CSC_RBWR, getcsc(CSC_RBWR) | 0x8);
-		else if(vpp_counter < 0)
-			BUG();
+		else
+			BUG_ON(vpp_counter < 0);
 	}
 	spin_unlock_irq(&dnpc_spin);
 }