Remove dependencies on the 1-variant fallback

When adding a dependencies, if the variants don't match, but the
dependency only has 1 variant anyways, soong will always use that
variant. This makes it hard to add new variants to soong, because the
1-variant fallback stops being used and you start getting missing
variant errors. Make changes to bp files such that all dependencies
correctly specify the variant to use.

Bug: 372091092
Flag: EXEMPT refactor
Test: m nothing
Change-Id: Ib00756396a8179348cff97c565e2b8038e973c43
diff --git a/microdroid/Android.bp b/microdroid/Android.bp
index e9b4b1e..a20ce93 100644
--- a/microdroid/Android.bp
+++ b/microdroid/Android.bp
@@ -212,7 +212,7 @@
 }
 
 // sepolicy sha256 for vendor
-genrule {
+java_genrule {
     name: "microdroid_plat_sepolicy_and_mapping.sha256_gen",
     srcs: [
         ":microdroid_plat_sepolicy.cil",