csiostor: Cleanup chip specific operations.

This patch removes chip specific operations from the common hardware
paths, as well as the Makefile change to accomodate the new files.

Signed-off-by: Arvind Bhushan <arvindb@chelsio.com>
Signed-off-by: Naresh Kumar Inna <naresh@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>