[POWERPC] Clean out a bunch of duplicate includes

This removes several duplicate includes from arch/powerpc/.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/kernel/btext.c

@@ -11,7 +11,6 @@
 #include <asm/sections.h>
 #include <asm/prom.h>
 #include <asm/btext.h>
-#include <asm/prom.h>
 #include <asm/page.h>
 #include <asm/mmu.h>
 #include <asm/pgtable.h>

arch/powerpc/kernel/crash.c

@@ -24,7 +24,6 @@
 #include <linux/init.h>
 #include <linux/irq.h>
 #include <linux/types.h>
-#include <linux/irq.h>
 
 #include <asm/processor.h>
 #include <asm/machdep.h>

arch/powerpc/kernel/iommu.c

@@ -30,7 +30,6 @@
 #include <linux/spinlock.h>
 #include <linux/string.h>
 #include <linux/dma-mapping.h>
-#include <linux/init.h>
 #include <linux/bitops.h>
 #include <asm/io.h>
 #include <asm/prom.h>

arch/powerpc/kernel/prom.c

@@ -52,7 +52,6 @@
 #include <asm/pSeries_reconfig.h>
 #include <asm/pci-bridge.h>
 #include <asm/kexec.h>
-#include <asm/system.h>
 
 #ifdef DEBUG
 #define DBG(fmt...) printk(KERN_ERR fmt)

arch/powerpc/kernel/time.c

@@ -72,7 +72,6 @@
 #include <asm/iseries/it_lp_queue.h>
 #include <asm/iseries/hv_call_xm.h>
 #endif
-#include <asm/smp.h>
 
 /* keep track of when we need to update the rtc */
 time_t last_rtc_update;