fix file specification in comments

Many files include the filename at the beginning, serveral used a wrong one.

Signed-off-by: Uwe Zeisberger <Uwe_Zeisberger@digi.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/arch/xtensa/lib/pci-auto.c b/arch/xtensa/lib/pci-auto.c
index 90c790f..a71733a 100644
--- a/arch/xtensa/lib/pci-auto.c
+++ b/arch/xtensa/lib/pci-auto.c
@@ -1,5 +1,5 @@
 /*
- * arch/xtensa/kernel/pci-auto.c
+ * arch/xtensa/lib/pci-auto.c
  *
  * PCI autoconfiguration library
  *