Add support for building flashrom against libpayload

This doesn't include changes to the frontend which must be
done separately, so this won't work out of the box.
This code was tested on hardware.

Corresponding to flashrom svn r1184.

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
diff --git a/hwaccess.c b/hwaccess.c
index 3a61e60..bbb91a6 100644
--- a/hwaccess.c
+++ b/hwaccess.c
@@ -22,9 +22,11 @@
 #include <string.h>
 #include <stdlib.h>
 #include <sys/types.h>
-#if !defined (__DJGPP__)
+#if !defined (__DJGPP__) && !defined(__LIBPAYLOAD__)
 #include <unistd.h>
 #include <fcntl.h>
+#endif
+#if !defined (__DJGPP__)
 #include <errno.h>
 #endif
 #include "flash.h"
@@ -44,7 +46,7 @@
 
 void get_io_perms(void)
 {
-#if defined(__DJGPP__)
+#if defined(__DJGPP__) || defined(__LIBPAYLOAD__)
 	/* We have full permissions by default. */
 	return;
 #else