Add noexcept to move constructors and assignment operators.

Bug: 116614593
Test: build with WITH_TIDY=1
Change-Id: Ic97b2945ad8c77688f9df94e511a970539c06105
diff --git a/base/Status.cpp b/base/Status.cpp
index 1ba91c3..7161bc0 100644
--- a/base/Status.cpp
+++ b/base/Status.cpp
@@ -150,7 +150,7 @@
         }
     }
 
-    return_status &return_status::operator=(return_status &&other) {
+    return_status& return_status::operator=(return_status&& other) noexcept {
         if (!mCheckedStatus && !isOk()) {
             LOG(FATAL) << "Failed HIDL return status not checked: " << description();
         }