dashboard: set GOMAXPROCS=1 for android corellium builder

Avoid the OOM killer.

Fixes golang/go#50084

Change-Id: I6e142bf8484d50392a360c3be9205ce223304bdc
Reviewed-on: https://go-review.googlesource.com/c/build/+/381514
Trust: Ian Lance Taylor <[email protected]>
Run-TryBot: Ian Lance Taylor <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>

Author: ianlancetaylor

dashboard/builders.go

@@ -646,6 +646,9 @@ var Hosts = map[string]*HostConfig{
 		ExpectNum: 3,
 		env: []string{
 			"GOROOT_BOOTSTRAP=/data/data/com.termux/files/home/go-android-arm64-bootstrap",
+			// Only run one job at a time to avoid the OOM killer.
+			// Issue 50084.
+			"GOMAXPROCS=1",
 		},
 	},
 	"host-aix-ppc64-osuosl": &HostConfig{