sh: enable LMB region setup via machvec.

This plugs in a memory init callback in the machvec to permit boards to
wire up various bits of memory directly in to LMB. A generic machvec
implementation is provided that simply wraps around the normal
Kconfig-derived memory start/size.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/kernel/machvec.c b/arch/sh/kernel/machvec.c
index 1652340..85cfaf9 100644
--- a/arch/sh/kernel/machvec.c
+++ b/arch/sh/kernel/machvec.c
@@ -131,6 +131,7 @@
 	mv_set(ioport_unmap);
 	mv_set(irq_demux);
 	mv_set(mode_pins);
+	mv_set(mem_init);
 
 	if (!sh_mv.mv_nr_irqs)
 		sh_mv.mv_nr_irqs = NR_IRQS;