Remove unneeded #include statements completely

Unistd.h was only used to get a definition of NULL in all files. Add our
own NULL #define and remove unistd.h from flash.h
stdio.h has no place in flash.h, it should be included only in files
which really need it.
Add #include statements in individual .c files where needed.

Replace a few printf with msg_* to eliminate the need for stdio.h.

Corresponding to flashrom svn r1021.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/hwaccess.c b/hwaccess.c
index 44d7871..f754166 100644
--- a/hwaccess.c
+++ b/hwaccess.c
@@ -21,6 +21,7 @@
 #include <stdint.h>
 #include <string.h>
 #include <stdlib.h>
+#include <unistd.h>
 #include <fcntl.h>
 #include <sys/types.h>
 #include <errno.h>