Fix package path of android/soong/android pctx

android/soong/common was renamed to android/soong/android long
ago, but the pctx package path was still "android/soong/common".
This required all users of rules defined in android/soong/android
to import "android/soong/android" and then
pctx.Import("android/soong/common").

Bug: 130298888
Test: m checkbuild
Change-Id: I20d096522760538f7cfc2bec3d4bfeba99b275d4
diff --git a/python/builder.go b/python/builder.go
index e3b490c..36baecd 100644
--- a/python/builder.go
+++ b/python/builder.go
@@ -73,7 +73,7 @@
 
 func init() {
 	pctx.Import("github.com/google/blueprint/bootstrap")
-	pctx.Import("android/soong/common")
+	pctx.Import("android/soong/android")
 
 	pctx.HostBinToolVariable("parCmd", "soong_zip")
 	pctx.HostBinToolVariable("mergeParCmd", "merge_zips")