androidbp: Improve target conditionals when host_supported

Properties need to be parsed twice to support different conditionals for
target and host modules. Then add 'android' target support that will
just be selected for target modules.

Change-Id: I8970d5a0d132324ac7e2a7fffc2b07e7c0da33c0
diff --git a/androidbp/cmd/soong.go b/androidbp/cmd/soong.go
index 95c938e..c40b507 100644
--- a/androidbp/cmd/soong.go
+++ b/androidbp/cmd/soong.go
@@ -106,6 +106,7 @@
 
 // TODO: host target?
 var targetScopedPropertyConditionals = map[string]string{
+	"android":       "",
 	"android32":     "ifneq($(TARGET_IS_64_BIT), true)",
 	"not_android32": "ifeq($(TARGET_IS_64_BIT), true)",
 	"android64":     "ifeq($(TARGET_IS_64_BIT), true)",