Add missing uapi header module.

Test: make checkbuild tests
Bug: http://b/30465923
Change-Id: I4000a9f7aa7ede03dfe799cea7c890bd5dcda575
diff --git a/libc/Android.bp b/libc/Android.bp
index f5cf301..f61cc46 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -2007,6 +2007,13 @@
 }
 
 ndk_headers {
+    name: "libc_android",
+    from: "kernel/android/uapi/linux",
+    to: "linux",
+    srcs: ["kernel/android/uapi/linux/**/*.h"],
+}
+
+ndk_headers {
     name: "libc_asm_generic",
     from: "kernel/uapi/asm-generic",
     to: "asm-generic",