[ARM] pxa: move platform devices to separate header file

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c
index 72b949b..f36ca44 100644
--- a/arch/arm/mach-pxa/pxa25x.c
+++ b/arch/arm/mach-pxa/pxa25x.c
@@ -29,6 +29,7 @@
 #include <asm/arch/dma.h>
 
 #include "generic.h"
+#include "devices.h"
 
 /*
  * Various clock factors driven by the CCCR register.