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>

drivers/net/mlx4/fw.c

@@ -76,7 +76,7 @@ static void dump_dev_cap_flags(struct mlx4_dev *dev, u32 flags)
 		[ 0] = "RC transport",
 		[ 1] = "UC transport",
 		[ 2] = "UD transport",
-		[ 3] = "SRC transport",
+		[ 3] = "XRC transport",
 		[ 4] = "reliable multicast",
 		[ 5] = "FCoIB support",
 		[ 6] = "SRQ support",