sh: Fix up various compile warnings for SE boards.

- setup-sh7750.c only defines the sh7751_ipr_map when building
  with SH7751 support.

- 7722 Solution Engine was missing a mach-type entry, causing
  the macro in cf-enabler to be undefined.

- arch/sh/mm/init.c needs linux/pagemap.h.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 2bb0d86..e0e644f 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -12,6 +12,7 @@
 #include <linux/init.h>
 #include <linux/bootmem.h>
 #include <linux/proc_fs.h>
+#include <linux/pagemap.h>
 #include <linux/percpu.h>
 #include <linux/io.h>
 #include <asm/mmu_context.h>