[PARISC] "Fix" circular includes

Use a really big hammer for the mean time to get things building again.
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

include/asm-parisc/pgtable.h

@@ -10,7 +10,6 @@
  * we simulate an x86-style page table for the linux mm code
  */
 
-#include <linux/spinlock.h>
 #include <linux/mm.h>		/* for vm_area_struct */
 #include <asm/processor.h>
 #include <asm/cache.h>

include/asm-parisc/processor.h

@@ -9,13 +9,10 @@
 #define __ASM_PARISC_PROCESSOR_H
 
 #ifndef __ASSEMBLY__
-#include <asm/prefetch.h>	/* lockdep.h needs <linux/prefetch.h> */
-
 #include <linux/threads.h>
-#include <linux/spinlock_types.h>
 
+#include <asm/prefetch.h>
 #include <asm/hardware.h>
-#include <asm/page.h>
 #include <asm/pdc.h>
 #include <asm/ptrace.h>
 #include <asm/types.h>

include/asm-parisc/spinlock_types.h

 #ifndef __ASM_SPINLOCK_TYPES_H
 #define __ASM_SPINLOCK_TYPES_H
 
-#ifndef __LINUX_SPINLOCK_TYPES_H
-# error "please don't include this file directly"
-#endif
-
 typedef struct {
 #ifdef CONFIG_PA20
 	volatile unsigned int slock;