drm_hwcomposer: CI: Replace shell scripts with Makefile

This won't make much benefits for CI, but for local native builds will
significantly speed-up build cycle by allowing parallel build and by
using dependency tracking logic.

Signed-off-by: Roman Stratiienko <roman.o.stratiienko@globallogic.com>

.gitlab-ci.yml

@@ -5,7 +5,7 @@ variables:
 
 before_script:
   - apt-get --quiet update --yes >/dev/null
-  - apt-get --quiet install --yes clang-12 clang-tidy-12 clang-format-12 git libdrm-dev blueprint-tools libgtest-dev >/dev/null
+  - apt-get --quiet install --yes clang-12 clang-tidy-12 clang-format-12 git libdrm-dev blueprint-tools libgtest-dev make >/dev/null
 
 stages:
   - build
@@ -13,7 +13,8 @@ stages:
 
 build:
   stage: build
-  script: "./.ci/.gitlab-ci-clang-build.sh"
+  script:
+    - make -f .ci/Makefile
   artifacts:
     when: on_failure
     untracked: true
@@ -24,17 +25,3 @@ checkstyle:
   artifacts:
     when: on_failure
     untracked: true
-
-tidy-coarse:
-  stage: style
-  script: "./.ci/.gitlab-ci-clang-tidy-coarse.sh"
-  artifacts:
-    when: on_failure
-    untracked: true
-
-tidy-fine:
-  stage: style
-  script: "./.ci/.gitlab-ci-clang-tidy-fine.sh"
-  artifacts:
-    when: on_failure
-    untracked: true