bnx2x: Fix compilation with stop-on-error

Commit 823e1d90

 caused bnx2x to fail once BNX2X_STOP_ON_ERROR is set.
Fixes compilation by moving function declarations between header files.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>