PPC32: Define a suitable value for PAGE_KERNEL_NOCACHE

include/asm-ppc/pgtable.h

@@ -300,6 +300,7 @@ extern unsigned long ioremap_bot, ioremap_base;
 #define PAGE_COPY_X	__pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_EXEC)
 
 #define PAGE_KERNEL		__pgprot(_PAGE_RAM)
+#define PAGE_KERNEL_NOCACHE	__pgprot(_PAGE_IO)
 
 /*
  * The PowerPC can only do execute protection on a segment (256MB) basis,
@@ -515,7 +516,7 @@ extern void paging_init(void);
 
 /*
  * When flushing the tlb entry for a page, we also need to flush the hash
- * table entry.  flush_hash_page is assembler (for speed) in hashtable.S.
+ * table entry.  flush_hash_pages is assembler (for speed) in hashtable.S.
  */
 extern int flush_hash_pages(unsigned context, unsigned long va,
 			    unsigned long pmdval, int count);