rockchip-rk3588: introduce vendor-boogie-panthor experimental BRANC…

…H/kernel

- original: https://github.com/hbiyik/linux-rockchip.git (branch `rk-6.1-rkr1-panthor-v6`)
- I picked the commits on top of clean armbian/linux-rockchip `6.1-rkr1` as of 2024-04-01
  - At https://github.com/rpardini/armbian-linux-rockchip-rk3588/tree/armbian-rk-6.1-rkr1-plus-boogie-panthor-v6
  - Diff: armbian/linux-rockchip@rk-6.1-rkr1...rpardini:armbian-linux-rockchip-rk3588:armbian-rk-6.1-rkr1-plus-boogie-panthor-v6

- rockchip-rk3588: introduce `boogie-bsp` BRANCH
- rockchip-rk3588: copy linux-rk35xx-vendor.config into linux-rk35xx-boogie-bsp.config
- rockchip-rk3588: update linux-rk35xx-boogie-bsp.config, no changes
- rockchip-rk3588: linux-rk35xx-boogie-bsp.config: `CONFIG_DRM_PANTHOR=m`
- rockchip-rk3588: linux-rk35xx-boogie-bsp.config: convert to defconfig
- rockchip-rk3588: rename to `BRANCH=vendor-boogie-panthor` for "clarity" (lol)
- rockchip-rk3588: vendor-boogie-panthor: force SERIALCON, full firmware (for blob needed for panthor) & mesa-oibaf extension
- rockchip-rk3588: vendor-boogie-panthor: enable amazingfated-rk35xx extension sans-panfork