Enable xmlconfig on Android
What does this MR do and why?
Enable xmlconfig on Android
I don't know why Mesa still disable it at meson.build, but let's put
this into good use. This commit includes :
- Allow Android availability on expat & xmlconfig at meson.build
- Include libxml2 into Android.mk
- Enable xmlconfig in mesa3d_cross.mk
- On Android, hardcode SYSCONFDIR to /vendor/etc/drirc, while
hardcode DATADIR to /data/vendor/drirc.d on xmlconfig.c
Signed-off-by: hmtheboy154 <buingoc67@gmail.com>