Add libevdev-dev dependency for unit tests

Change-Id: I4c3645b0dc883ce18af2008b6ef5d9880d937370
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
diff --git a/build-unit-test-docker.sh b/build-unit-test-docker.sh
index 61b5430..fb89638 100755
--- a/build-unit-test-docker.sh
+++ b/build-unit-test-docker.sh
@@ -61,6 +61,7 @@
     autoconf \
     libsystemd-dev \
     libssl-dev \
+    libevdev-dev \
     sudo \
     wget \
     git \