Add s905l2 (p281 board) dtb

[NewbieOrange]

Hi,

I recently got a cheap p281 board with S905L2 on it. S905L2 seemed to be a even more stripped down version of S905W, with one less GPU core (Mali 450 MP2). Booting with S905W dtb will cause kernel panic from Mali driver, and this dtb fixed the issue.

[NewbieOrange]

I am not exactly sure what this chip actually named, but other sources called it a S905L2.

https://github.com/hexdump0815/linux-mainline-and-mali-generic-stable-kernel/blob/master/misc.av8/dtb/meson-gxl-s905l2-x7-5g.dts

[ophub]

unifreq/linux-5.15.y@0527b05

Hello, now meson-gxl-s905l2-p281.dtb has been added to the kernel using your feedback dts, and it is called meson-gxl-s905l2-x7-5g.dtb. Please refer to this name when you use it in the future.