Enable libjxl on Android and fix its aarch64 build
Doesn't fix the associated bug, the warnings still fire. But at least it builds on updated NDK versions.
Test Plan
Build Krita on Android x86, armv7-a and arm64.
Formalities Checklist
-
I confirmed this builds. -
I confirmed Krita ran and the relevant functions work. -
I tested the relevant unit tests and can confirm they are not broken. (If not possible, don't hesitate to ask for help!) -
I made sure my commits build individually and have good descriptions as per KDE guidelines. -
I made sure my code conforms to the standards set in the HACKING file. -
I can confirm the code is licensed and attributed appropriately, and that unattributed code is mine, as per KDE Licensing Policy.