MBa8MPxL: use nxp WLAN/BT firmware, cleanup board files, leave WIP

[schmiedelm]

Description

After a discussion with NXP it is allowed to download the proprietary firmware (for the WLAN/BT module on mba8mp-ras314) from NXP and integrate it into the rootfs. Deployment via the armbian-firmware repo was rejected. Unfortunately, there seems to be no interest on the part of NXP to integrate the WLAN/BT firmware into linux-firware in a timely manner.

So installing firmware for this chip become a step in post_family_tweaks_bsp_.

It is time to leave the WIP state and so the board-configs are cleaned up and renamed

How Has This Been Tested?

• [x] Build images for mba8mp-ras314 and mba8mpxl with current kernel
• [x] Boot test "bookworm_current" mba8mp-ras314
• [x] Boot test "bookworm_current" mba8mpxl
• [x] HDMI, WLAN, USB test's mba8mp-ras314" bookworm_current" with xfce image
• [x] HDMI, USB test's mba8mpxl" bookworm_current" with xfce image

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas

[igorpecovnik]

After a discussion with NXP it is allowed to download the proprietary firmware (for the WLAN/BT module on mba8mp-ras314) from NXP and integrate it into the rootfs. Deployment via the armbian-firmware repo was rejected. Unfortunately, there seems to be no interest on the part of NXP to integrate the WLAN/BT firmware into linux-firware in a timely manner.

So installing firmware for this chip become a step in post_family_tweaks_bsp_.

OK, not an issue.