PPC32: adjust some includes in response to recent include cleanups

arch/ppc/platforms/pmac_pic.c

@@ -21,6 +21,7 @@
 #include <linux/sched.h>
 #include <linux/signal.h>
 #include <linux/pci.h>
+#include <linux/interrupt.h>
 
 #include <asm/sections.h>
 #include <asm/io.h>

arch/ppc/syslib/i8259.c

-#include <linux/stddef.h>
 #include <linux/init.h>
-#include <linux/irq.h>
 #include <linux/ioport.h>
-#include <linux/sched.h>
-#include <linux/signal.h>
+#include <linux/interrupt.h>
 #include <asm/io.h>
 #include <asm/i8259.h>
 

arch/ppc/syslib/open_pic.c

@@ -14,6 +14,7 @@
 #include <linux/sched.h>
 #include <linux/init.h>
 #include <linux/irq.h>
+#include <linux/interrupt.h>
 #include <asm/ptrace.h>
 #include <asm/signal.h>
 #include <asm/io.h>

include/asm-ppc/hardirq.h

@@ -3,7 +3,7 @@
 #define __ASM_HARDIRQ_H
 
 #include <linux/config.h>
-#include <asm/smp.h>
+#include <linux/cache.h>
 
 /* The __last_jiffy_stamp field is needed to ensure that no decrementer 
  * interrupt is lost on SMP machines. Since on most CPUs it is in the same