Big cosmetic offensive on flashrom

* Give decent names to virt_addr and virt_addr_2
* add some comments
* move virtual addresses to the end of the struct,
  so they dont mess up the initializer.

Corresponding to flashrom svn r111 and coreboot v2 svn r2689.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
diff --git a/sst39sf020.c b/sst39sf020.c
index 9c71659..1277f10 100644
--- a/sst39sf020.c
+++ b/sst39sf020.c
@@ -52,7 +52,7 @@
 	int i;
 	int total_size = flash->total_size * 1024;
 	int page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virt_addr;
+	volatile uint8_t *bios = flash->virtual_memory;
 
 	erase_chip_jedec(flash);