tg3: Add per-int coalesce now member

Each interrupt vector has its own bit in the host coalescing register to
force that vector's status block to be updated and generate an
interrupt.  This patch adds a member to the per-interrupt structure
that records which bit belongs to that vector.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/tg3.h

@@ -1031,6 +1031,7 @@
 #define  HOSTCC_MODE_CLRTICK_TXBD	 0x00000400
 #define  HOSTCC_MODE_NOINT_ON_NOW	 0x00000800
 #define  HOSTCC_MODE_NOINT_ON_FORCE	 0x00001000
+#define  HOSTCC_MODE_COAL_VEC1_NOW	 0x00002000
 #define HOSTCC_STATUS			0x00003c04
 #define  HOSTCC_STATUS_ERROR_ATTN	 0x00000004
 #define HOSTCC_RXCOL_TICKS		0x00003c08
@@ -2497,6 +2498,7 @@ struct tg3_napi {
 	u32				last_tag;
 	u32				last_irq_tag;
 	u32				int_mbox;
+	u32				coal_now;
 	u32				tx_prod;
 	u32				tx_cons;
 	u32				tx_pending;