mlx4_core: Change capability decoding: SRC->XRC

The SRC ("scalable RC") transport has been renamed to XRC ("extended 
RC"), to avoid having an abbreviation that is so easily confused with an 
abbreviation for "source."  Update the HCA capability decoding output to 
use the new name.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/net/mlx4/fw.c b/drivers/net/mlx4/fw.c
index c45cbe4..6471d33 100644
--- a/drivers/net/mlx4/fw.c
+++ b/drivers/net/mlx4/fw.c
@@ -76,7 +76,7 @@
 		[ 0] = "RC transport",
 		[ 1] = "UC transport",
 		[ 2] = "UD transport",
-		[ 3] = "SRC transport",
+		[ 3] = "XRC transport",
 		[ 4] = "reliable multicast",
 		[ 5] = "FCoIB support",
 		[ 6] = "SRQ support",