atrusctl: remove version suffix in libbrillo build rules

The libbrillo library is installed without version suffix.

BUG=chromium:920513
TEST=emerge

Cq-Depend: chromium:1892317, chromium:1892377
Change-Id: I51ed070d7c33996b8b519ef7da0200d4c0c6e441
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/atrusctl/+/1890579
Tested-by: Grace Cham <hscham@chromium.org>
Reviewed-by: Hidehiko Abe <hidehiko@chromium.org>
Reviewed-by: Anchal Sharma <anchals@chromium.org>
Commit-Queue: Grace Cham <hscham@chromium.org>
diff --git a/BUILD.gn b/BUILD.gn
index 0a0d802..6a233e9 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -40,7 +40,7 @@
   # TODO(oka): This is necessary to suppress warning in util.cc
   configs += [ ":atrusd_config" ]
   pkg_deps = [
-    "libbrillo-${libbase_ver}",
+    "libbrillo",
     "libchrome-${libbase_ver}",
     "libudev",
     "libusb-1.0",