Add ti-u-boot-2024.04 support into integ/ti-u-boot-2024.04

These build config changes are needed to build for ti-u-boot-2024.04.

We can't merge this as-is into ti-android-14 (because it will break ti-uboot-2023.04).

/cc @JulienMasson @glaroque

While maintaining both ti-uboot-2023.04 and ti-uboot-2024.04, this will be handled as following:

• Use 2 branches (ti-android-14 builds for ti-uboot-2023.04 and integ/ti-u-boot-2024.04 builds for ti-u-boot-2024.04)
• Default set of bootloaders will be built from ti-android-14
• New (test) bootloaders will be built from integ/ti-u-boot-2024.04

After ti-u-boot-2023.04 gets deprecated, we will merge integ/ti-u-boot-2024.04 back into ti-android-14.

A different bootloaders manifest is provided using this branch: baylibre/ti/android/aosp/manifest!78 (merged)