arm: fix implicit use of page.h in several arch/arm files

Add the include to fix things like this:

arch/arm/mach-sa1100/jornada720.c:278: error: 'PAGE_SHIFT' undeclared here (not in a function)
arch/arm/mach-bcmring/mm.c:32: error: 'PAGE_SHIFT' undeclared here (not in a function)
arch/arm/mach-sa1100/collie.c:361: error: 'PAGE_SHIFT' undeclared here (not in a function)

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/arch/arm/mach-sa1100/jornada720.c b/arch/arm/mach-sa1100/jornada720.c
index 0bb520d..77198fe 100644
--- a/arch/arm/mach-sa1100/jornada720.c
+++ b/arch/arm/mach-sa1100/jornada720.c
@@ -26,6 +26,7 @@
 #include <mach/hardware.h>
 #include <asm/hardware/sa1111.h>
 #include <asm/irq.h>
+#include <asm/page.h>
 #include <asm/mach-types.h>
 #include <asm/setup.h>
 #include <asm/mach/arch.h>