qla4xxx: Fix the IDC locking mechanism

qla4xxx: Fix the IDC locking mechanism

This ensures the transition of dev_state from COLD to
INITIALIZING is within lock and atomic.

Jira Key: IUEKR2ISCSI-6

Signed-off-by: Nilesh Javali <nilesh.javali@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Tej Parkash <tej.parkash@qlogic.com>
Signed-off-by: Chuck Anderson <chuck.anderson@oracle.com>