irqchip: mips-gic: Clean up #includes

Sort the #includes and remove those which are unnecessary.
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/8130/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

drivers/irqchip/irq-mips-gic.c

@@ -7,19 +7,16 @@
  * Copyright (C) 2012 MIPS Technologies, Inc.  All rights reserved.
  */
 #include <linux/bitmap.h>
+#include <linux/clocksource.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/irqchip/mips-gic.h>
 #include <linux/sched.h>
 #include <linux/smp.h>
-#include <linux/irq.h>
-#include <linux/clocksource.h>
 
-#include <asm/io.h>
 #include <asm/setup.h>
 #include <asm/traps.h>
-#include <linux/hardirq.h>
-#include <asm-generic/bitops/find.h>
 
 unsigned int gic_frequency;
 unsigned int gic_present;