This patch adds interrupt handling as on AR7. The old code was very messy and
didn't work too well. It also removes the unused file int-handler.S.
Signed-off-by: Axel Gembe <ago@bastart.eu.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11178 3c298f89-4303-0410-b956-a3cf2f4a3e73
