fixup! Base Browser's .mozconfigs.

Bug 41684: Fix Android mozconfigs for local dev builds

browser/config/mozconfigs/base-browser-android

@@ -38,6 +38,7 @@ ac_add_options MOZ_TELEMETRY_REPORTING=
 if test -n "$LOCAL_DEV_BUILD"; then
     # You must use the "default" bogus channel for dev builds
     ac_add_options --enable-update-channel=default
+    ac_add_options --with-base-browser-version=dev-build
 else
     # We only use beta GeckoView for now, for official builds
     ac_add_options --enable-update-channel=beta

mozconfig-android-all

@@ -10,6 +10,7 @@ if test -n "$LOCAL_DEV_BUILD"; then
     # You must use the "default" bogus channel for dev builds
     ac_add_options --enable-update-channel=default
     ac_add_options --without-wasm-sandboxed-libraries
+    ac_add_options --with-base-browser-version=dev-build
 else
     # We want to have a similar fat .aar versioning as Mozilla and make it clear
     # we are on the beta channel for GeckoView