device-xiaomi-vayu: move back to testing

It seems to have been mistakenly archived. Someone had taken over
maintainership 2 months ago (pmaports!8332) and now is confused that
it got archived anyway.

Fixes #4664

This reverts commit d3998f0189.

Signed-off-by: Ferass El Hafidi <funderscore@postmarketos.org>
Part-of: <https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/8908>

device/testing/device-xiaomi-vayu/APKBUILD

@@ -1,6 +1,5 @@
-# Archived: unmaintained
 # Reference: <https://postmarketos.org/devicepkg>
-maintainer=""
+maintainer="Ali Nasrullayev <nesrullayev.ali@gmail.com>"
 pkgname=device-xiaomi-vayu
 pkgdesc="Xiaomi POCO X3 Pro"
 pkgver=6

device/testing/firmware-xiaomi-vayu/APKBUILD

@@ -1,5 +1,4 @@
-# Archived: unmaintained
-maintainer=""
+maintainer="Ali Nasrullayev <nesrullayev.ali@gmail.com>"
 pkgname=firmware-xiaomi-vayu
 pkgver=2
 pkgrel=0