The generic hardirq layer already takes care of a lot of the
appropriate locking and disabling for us, no need to duplicate
it in the handlers..
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This adds support for the Renesas SH7780 development boards,
R7780RP and R7780MP.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>