vxge: Fixes in isr routine

- Fixes in isr routine
   Fixed crash with INTA mode during driver unload. Pass hldev to request_irq
   instead of vdev.
   Fixed Traffic failure with GRO in INTA mode. Pass the correct napi
   context to gro functions.

Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: David S. Miller <davem@davemloft.net>