ARM: add size argument to __cpuc_flush_dcache_page

... and rename the function since it no longer operates on just
pages.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mm/nommu.c

@@ -61,7 +61,7 @@ void setup_mm_for_reboot(char mode)
 
 void flush_dcache_page(struct page *page)
 {
-	__cpuc_flush_dcache_page(page_address(page));
+	__cpuc_flush_dcache_area(page_address(page), PAGE_SIZE);
 }
 EXPORT_SYMBOL(flush_dcache_page);