Enable virtual ARM64 nightly builds for qemu (#2875)

* Enable Virtual qemu build targets
* Bugfix - saving build number is being overwritten before saved
* Remove stable builds, not needed
* Update kernel config, enable current instead of edge

config/targets-cli-beta.conf

@@ -358,3 +358,7 @@ z28pro              legacy          hirsute      cli                      beta
 
 # zeropi
 zeropi              edge            hirsute      cli                      beta         yes
+
+
+# Virtual qemu
+virtual-qemu        current         hirsute     cli                       beta         yes

lib/build-all-ng.sh

@@ -467,9 +467,6 @@ do
 	sleep 5
 done
 
-# display what we will build
-build_all "dryrun"
-
 fi
 
 [[ $n -eq 0 ]] && display_alert "No changes in upstream sources, patches or configs found. Exiting." "info"
@@ -478,3 +475,6 @@ buildall_end=$(date +%s)
 buildall_runtime=$(((buildall_end - buildall_start) / 60))
 display_alert "Runtime in total" "${buildall_runtime} min" "info"
 echo "${n}" > "${SRC}"/.tmp/n
+
+# display what we will build
+build_all "dryrun"