Reinstate lost flush_ioremap_region() fix to pxa2xx-flash driver

Commit 90833fd ("[ARM] 4554/1: replace
consistent_sync() with flush_ioremap_region()") introduced a new
"flush_ioremap_region()" function to be used by the MTD mainstone-flash
and lubbock-flash drivers to fix a regression from around 2.6.18.

Those drivers were independently merged into a single driver by Todd
Poynor in commit e644f7d ("[MTD] MAPS:
Merge Lubbock and Mainstone drivers into common PXA2xx driver")

Later, those two commits were merged into the main MTD tree by commit
b160292 ("Merge Linux 2.6.23") by David
Woodhouse, but in that merge, the fix to use flush_iomap_region() got
lost (as it was to files that now no longer existed).

This reinstates the fix in the new driver.

Noticed-by: Russell King <[email protected]>
Tested-and-acked-by: Nicolas Pitre <[email protected]>
Cc: David Woodhouse <[email protected]>
Cc: Jared Hulbert <[email protected]>
Cc: Todd Poynor <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

drivers/mtd/maps/pxa2xx-flash.c

@@ -14,20 +14,20 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/map.h>
 #include <linux/mtd/partitions.h>
 
 #include <asm/io.h>
 #include <asm/hardware.h>
+#include <asm/cacheflush.h>
 
 #include <asm/mach/flash.h>
 
 static void pxa2xx_map_inval_cache(struct map_info *map, unsigned long from,
 				      ssize_t len)
 {
-	consistent_sync((char *)map->cached + from, len, DMA_FROM_DEVICE);
+	flush_ioremap_region(map->phys, map->cached, from, len);
 }
 
 struct pxa2xx_flash_info {