metag/kernel/irq.c: Declare root_domain as static

It is only referenced within the irq.c file, so restrict it's scope
as appropriate.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
This commit is contained in:
Markos Chandras 2013-05-07 16:48:21 +01:00 • committed by James Hogan
commit 32580ae701