CI: define matrix individually and add targets

This allows more specific definition per test, like on which target
packages should be compiled.

Signed-off-by: Paul Spooren <mail@aparcar.org>

.github/workflows/multi-arch-test-build.yml

@@ -10,21 +10,41 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        arch:
-          - arc_archs
-          - arm_cortex-a9_vfpv3-d16
-          - mips_24kc
-          - powerpc_464fp
-          - powerpc_8540
-        runtime_test: [false]
         include:
+          - arch: arc_archs
+            target: archs38-generic
+            runtime_test: false
+
+          - arch: arm_cortex-a9_vfpv3-d16
+            target: mvebu-cortexa9
+            runtime_test: false
+
+          - arch: mips_24kc
+            target: ath79-generic
+            runtime_test: false
+
+          - arch: powerpc_464fp
+            target: apm821xx-nand
+            runtime_test: false
+
+          - arch: powerpc_8540
+            target: mpc85xx-p1010
+            runtime_test: false
+
           - arch: aarch64_cortex-a53
+            target: mvebu-cortexa53
             runtime_test: true
+
           - arch: arm_cortex-a15_neon-vfpv4
+            target: armvirt-32
             runtime_test: true
+
           - arch: i386_pentium-mmx
+            target: x86-geode
             runtime_test: true
+
           - arch: x86_64
+            target: x86-64
             runtime_test: true
 
     steps: