[Armbian build PR] - cli: uboot: Move `uboot_cflags` variable to before its first use

[RSS Bot]

Description

Fixes https://github.com/armbian/build/pull/6819, see https://github.com/armbian/build/pull/6819#discussion_r1681548553

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] My changes generate no new warnings

View the full article