Set min_sdk_version

Many modules requiring min_sdk_version have been used without setting
it, but hard-coded as "30" in allowlist.

Bug: 158059172
Test: m
Change-Id: I0b461c28077584f2db2d2f688423f2227c0a2d1a
diff --git a/libasyncio/Android.bp b/libasyncio/Android.bp
index 692e223..296e207 100644
--- a/libasyncio/Android.bp
+++ b/libasyncio/Android.bp
@@ -32,6 +32,7 @@
     defaults: ["libasyncio_defaults"],
     vendor_available: true,
     recovery_available: true,
+    min_sdk_version: "apex_inherit",
     apex_available: [
         "//apex_available:platform",
         "com.android.adbd",