irq_domain_generate_simple() is an easy way to generate an irq translation domain for simple irq controllers. It assumes a flat 1:1 mapping from hardware irq number to an offset of the first linux irq number assigned to the controller Change-Id: I0820754314a0c15b1cc9881bc38b75b0de2509b2 Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Sathish Ambley <sambley@codeaurora.org>