Revert^2 "Update HIDL EventFlagBits to have the correct values"

This reverts commit 98444463f3cf7444da0c5d647c25287a525dfebf.

Reason for revert: needed to be submitted together with libfmq CL

Change-Id: Iad7cce6a38a7750ad88530c7a10521f8ff3d3ef8
Test: atest fmq_test fmq_unit_tests
Bug: 352396902
diff --git a/tests/msgq/1.0/ITestMsgQ.hal b/tests/msgq/1.0/ITestMsgQ.hal
index 0cf9c7c..62bef0a 100644
--- a/tests/msgq/1.0/ITestMsgQ.hal
+++ b/tests/msgq/1.0/ITestMsgQ.hal
@@ -18,8 +18,8 @@
 
 interface ITestMsgQ {
     enum EventFlagBits : uint32_t {
-        FMQ_NOT_EMPTY = 1 << 0,
-        FMQ_NOT_FULL  = 1 << 1,
+        FMQ_NOT_FULL = 1 << 0,
+        FMQ_NOT_EMPTY  = 1 << 1,
     };
 
     /**