vboot: fix up some includes

These header files need to make use of vb2_shared_data.
Remove the last vestiges of vboot1 data structures in coreboot.

BUG=b:124141368, chromium:1038260
TEST=Build locally with CL:2054269
TEST=make clean && make test-abuild
BRANCH=none

Change-Id: I61b27e33751c11aac9f8af261a75d83b003b5f92
Signed-off-by: Joel Kitching <kitching@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38884
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/security/vboot/misc.h

@@ -18,9 +18,7 @@
 
 #include <assert.h>
 #include <security/vboot/vboot_common.h>
-
-struct vb2_context;
-struct vb2_shared_data;
+#include <vb2_api.h>
 
 /*
  * Source: security/vboot/common.c