Hide hwaccess.h from public API

Move hwaccess.h #include from flash.h to individual drivers.
libflashrom users need flash.h, but they do not care about hwaccess.h
and should not see its definitions because they may conflict with
other hardware access functions and #defines used by the libflashrom
user.

Corresponding to flashrom svn r1549.

Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
diff --git a/ogp_spi.c b/ogp_spi.c
index 812420c..2966024 100644
--- a/ogp_spi.c
+++ b/ogp_spi.c
@@ -21,6 +21,7 @@
 #include <string.h>
 #include "flash.h"
 #include "programmer.h"
+#include "hwaccess.h"
 
 #define PCI_VENDOR_ID_OGP 0x1227