Fix makefiles to work with ebuild

tests/Makefile

 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 INCLUDES += -I./include \
                 -I$(FWDIR)/lib/include \
                 -I$(FWDIR)/lib/cgptlib/include \
                 -I$(FWDIR)/lib/cryptolib/include \
                 -I$(HOSTDIR)/include
 BUILD_ROOT = ${BUILD}/tests
@@ skipping 83 matching lines @@
 
 # TODO: tests to run when ported to new API
 #       ./run_image_verification_tests.sh
 #       # Splicing tests
 #       ${BUILD_ROOT}/firmware_splicing_tests
 #       ${BUILD_ROOT}/kernel_splicing_tests
 #       # Rollback Tests
 #       ${BUILD_ROOT}/firmware_rollback_tests
 #       ${BUILD_ROOT}/kernel_rollback_tests
 
+# Must have a dummy install target for ebuild
+install:
+
 #install: $(BUILD_ROOT)/rollback_index_test
 #       mkdir -p $(DESTDIR)
 #       cp -f $(BUILD_ROOT)/rollback_index_test $(DESTDIR)
 
 -include ${ALL_DEPS}