s390/qdio: bridgeport support - CHSC part

Introduce function for the "Perform network-subchannel operation"
CHSC command with operation code "bridgeport information",
and bit definitions for "characteristics" pertaning to this command.

Signed-off-by: Eugene Crosser <eugene.crosser@ru.ibm.com>
Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/include/asm/css_chars.h b/arch/s390/include/asm/css_chars.h
index 7e1c917..09d1dd4 100644
--- a/arch/s390/include/asm/css_chars.h
+++ b/arch/s390/include/asm/css_chars.h
@@ -29,6 +29,8 @@
 	u32 fcx : 1;	 /* bit 88 */
 	u32 : 19;
 	u32 alt_ssi : 1; /* bit 108 */
+	u32:1;
+	u32 narf:1;	 /* bit 110 */
 } __packed;
 
 extern struct css_general_char css_general_characteristics;