apps: resnet18: Ensure input data is 32-aligned

Signed-off-by: xychen <xychen@listenai.com>
1 job 于bugfix/thinker-timeout in 2 minute 和 12 second (queued for 2 second)
状态 作业 ID 名称 覆盖率
  Ztest
已通过 #62503
zgsz-03 generic
ztest_build_only

00:02:12