Minimal dtbo partition.

Supported devices:

• Redmi 7 (xiaomi-onclite).
• Redmi 7A (xiaomi-pine)
• Redmi 8 (xiaomi-olive)
• Lenovo Tab M10 HD (lenovo-tbx505x)
• Fossil Gen 6 (fossil-hoki)
• HMD Global Nokia 4.2 (nokia-panther)
• Motorola Moto G7 Power (motorola-ocean)
• Oppo Realme 2/C1 (oppo-rmx1805)

Used for lk2nd and mainline kernel.

This requires dtc and mkdtboimg (from AOSP libufdt) to build.