mlx4_core: Trivial readability fix: "0X30" -> "0x30"

Signed-off-by: Roland Dreier <roland@purestorage.com>
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index e2ed36e..419914b 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -183,7 +183,7 @@
 #define QUERY_FUNC_CAP_MTT_QUOTA_OFFSET		0x24
 #define QUERY_FUNC_CAP_MCG_QUOTA_OFFSET		0x28
 #define QUERY_FUNC_CAP_MAX_EQ_OFFSET		0x2c
-#define QUERY_FUNC_CAP_RESERVED_EQ_OFFSET	0X30
+#define QUERY_FUNC_CAP_RESERVED_EQ_OFFSET	0x30
 
 #define QUERY_FUNC_CAP_FMR_FLAG			0x80
 #define QUERY_FUNC_CAP_FLAG_RDMA		0x40