S2io: Added napi support when MSIX is enabled.

- Added napi support when MSIX is enabled.
- Moved test_msi function from s2io_open to probe function.

Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/net/s2io-regs.h b/drivers/net/s2io-regs.h
index 2109508..f8274f8 100644
--- a/drivers/net/s2io-regs.h
+++ b/drivers/net/s2io-regs.h
@@ -250,7 +250,7 @@
 	u64 tx_mat0_n[0x8];
 #define TX_MAT_SET(fifo, msi)			vBIT(msi, (8 * fifo), 8)
 
-	u8 unused_1[0x8];
+	u64 xmsi_mask_reg;
 	u64 stat_byte_cnt;
 #define STAT_BC(n)                              vBIT(n,4,12)