asus-me176c: Update mainline kernel fork to 5.4.20, enable Anbox options
The patch set for asus-me176c is really small at this point, and there is no need to make a new tag for each minor kernel update. Usually the previous patch set will still apply correctly.
Refactor the APKBUILD to build the kernel similar to linux-lts in Alpine, and use the original kernel tarball together with a small patch file on top.
Also enable Android-related options in the kernel so we can test Anbox on asus-me176c. (see https://gitlab.com/postmarketOS/pmaports/issues/327)
Edited by Administrator