Set min_sdk_version for updatable mainline modules

Modules contributing mainline modules (APK/APEX) should set
min_sdk_version as well as apex_available.

For now setting min_sdk_version doesn't change build outputs.
But build-time checks will be added soon.

Bug: 145796956
Bug: 150999716
Test: m
Change-Id: Ifaecb49a47a1f43edea3ea06e1cf704a177d1044
diff --git a/Tethering/Android.bp b/Tethering/Android.bp
index 27297c4..89264c9 100644
--- a/Tethering/Android.bp
+++ b/Tethering/Android.bp
@@ -50,6 +50,11 @@
 cc_library {
     name: "libtetherutilsjni",
     sdk_version: "current",
+    apex_available: [
+        "//apex_available:platform", // Used by InProcessTethering
+        "com.android.tethering",
+    ],
+    min_sdk_version: "current",
     srcs: [
         "jni/android_net_util_TetheringUtils.cpp",
     ],
@@ -121,4 +126,5 @@
     // The permission configuration *must* be included to ensure security of the device
     required: ["NetworkPermissionConfig"],
     apex_available: ["com.android.tethering"],
+    min_sdk_version: "current",
 }