sh: Switch SH-5 to use CONFIG_PAGE_OFFSET.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index 7ff26c1..2af9507 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -17,7 +17,8 @@
 
 config PAGE_OFFSET
 	hex
-	default "0x80000000" if MMU
+	default "0x80000000" if MMU && SUPERH32
+	default "0x20000000" if MMU && SUPERH64
 	default "0x00000000"
 
 config MEMORY_START