layout.h,c: Use 'false' over '0' for bool type

The field member 'included' is of type boolean and so keep to
using 'true, false' values over numerics like '0'. Get rid of
a unnecessary yet trivial tab at the end of layout.h while we
are here.

Change-Id: Ib594de2834175482ae5e36d9dd354ef2555c53d5
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Original-Reviewed-on: https://review.coreboot.org/c/flashrom/+/48743
Original-Reviewed-by: Sam McNally <sammc@google.com>
Original-Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/flashrom-stable/+/72164
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/layout.h b/layout.h
index 8e4eb13..cceedd1 100644
--- a/layout.h
+++ b/layout.h
@@ -67,4 +67,4 @@
 const struct romentry *layout_next_included_region(const struct flashrom_layout *, chipoff_t);
 const struct romentry *layout_next_included(const struct flashrom_layout *, const struct romentry *);
 
-#endif				/* !__LAYOUT_H__ */
+#endif /* !__LAYOUT_H__ */