[PATCH v3 04/20] expo: Set the initial next_id to 1

[Simon Glass]

If expo_set_dynamic_start() is never called, the first scene created
will have an ID of 0, which is invalid. Correct this by setting a
default value.

Add a test to check this.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

(no changes since v1)

 boot/expo.c      |  1 +
 test/boot/expo.c | 23 +++++++++++++++++++++--
 2 files changed, 22 insertions(+), 2 deletions(-)

Applied to u-boot-dm, thanks!