Add sdk_version to the kotlinx_coroutines_guava target

Bug: 368668054
Test: Presubmits
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:756c14f8677375b29cca08d5bf687f759b65b610)
Merged-In: I7eb8e6dbae978e981b77c59be8bb6f53dbd18594
Change-Id: I7eb8e6dbae978e981b77c59be8bb6f53dbd18594
diff --git a/Android.bp b/Android.bp
index cdb89c6..122719e 100644
--- a/Android.bp
+++ b/Android.bp
@@ -216,6 +216,8 @@
 // Maven coordinate: org.jetbrains.kotlinx:kotlinx-coroutines-guava
 java_library {
     name: "kotlinx_coroutines_guava",
+    sdk_version: "current",
+    min_sdk_version: "28",
     host_supported: true,
     srcs: ["integration/kotlinx-coroutines-guava/src/**/*.kt"],
     kotlincflags: [
@@ -258,7 +260,6 @@
     visibility: ["//visibility:public"],
 }
 
-
 // Maven coordinate: org.jetbrains.kotlinx:kotlinx-coroutines-rx2
 java_library {
     name: "kotlinx_coroutines_rx2",