iscsiadm: Check for mode is not required when creating params list

There is no need to explicitly check for mode while creating the params
list of name/value pairs.

Reported-by: Leeman Duncan <leeman.duncan@gmail.com>
Signed-off-by: Adheer Chandravanshi <adheer.chandravanshi@qlogic.com>
Updated build_rpm script and added latest patch

Script now handles "-d DESTDIR" and no longer
hard-codes the max patch number (untested).