Add work profile feature flag

Fix: 296290011
Test: basic voice call + data browsing
Change-Id: I8404d5c68324dc6764eb2e238227883276fc7898
diff --git a/flags/data.aconfig b/flags/data.aconfig
new file mode 100644
index 0000000..9a5b506
--- /dev/null
+++ b/flags/data.aconfig
@@ -0,0 +1 @@
+package: "com.android.internal.telephony.flags"