Allow guava to use java_host_for_device

Guava can't compile against a device bootclasspath, it uses methods
that only exist in the host bootclasspath, and then avoids calling
them at runtime.

Bug: 130306229
Test: m checkbuild
Change-Id: I012030cb701c01ea9ff554c1b6156d0242365a4c
Merged-In: I012030cb701c01ea9ff554c1b6156d0242365a4c
Exempt-From-Owner-Approval: cherry pick
(cherry picked from commit b5191a573d)

android/neverallow.go

@@ -128,6 +128,7 @@ func createLibcoreRules() []*rule {
 
 func createJavaDeviceForHostRules() []*rule {
 	javaDeviceForHostProjectsWhitelist := []string{
+		"external/guava",
 		"external/robolectric-shadows",
 		"framework/layoutlib",
 	}