ARM: ux500: make irqs.h local to platform

With the PRCMU out of the way, nothing outside of mach-ux500
uses mach/irqs.h any more, so we can make it a local header file,
including the two sub-headers.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/arch/arm/mach-ux500/devices-db8500.c b/arch/arm/mach-ux500/devices-db8500.c
index 4c0ef14..45ec955 100644
--- a/arch/arm/mach-ux500/devices-db8500.c
+++ b/arch/arm/mach-ux500/devices-db8500.c
@@ -16,7 +16,7 @@
 #include <linux/mfd/dbx500-prcmu.h>
 
 #include <mach/setup.h>
-#include <mach/irqs.h>
+#include "irqs.h"
 
 #include "db8500-regs.h"
 #include "devices-db8500.h"