.travis.yml: Shorten the runtime of the problematic jobs

The "[s390x] GCC (other-system)" and the "[s390x] GCC check-tcg"
jobs are hitting the 50 minutes timeout in Travis quite frequently
since a while.

To fix it, we've got to drop a lot of the targets from the target
list in the jobs to make them work again.

With regards to the "check-tcg" test, we can move the check with
"s390x-linux-user" to the "user" job instead which also builds
the s390x-linux-user target.

And while we're at it, remove the "--enable-fdt=system" configure
switch (since this is not required nowadays anymore).

Message-ID: <20240320104144.823425-2-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

.travis.yml

@@ -184,8 +184,8 @@ jobs:
           - genisoimage
       env:
         - TEST_CMD="make check check-tcg V=1"
-        - CONFIG="--disable-containers --enable-fdt=system
-                  --target-list=${MAIN_SYSTEM_TARGETS},s390x-linux-user"
+        - CONFIG="--disable-containers
+            --target-list=hppa-softmmu,mips64-softmmu,ppc64-softmmu,riscv64-softmmu,s390x-softmmu,x86_64-softmmu"
         - UNRELIABLE=true
       script:
         - BUILD_RC=0 && make -j${JOBS} || BUILD_RC=$?
@@ -225,8 +225,8 @@ jobs:
           # Tests dependencies
           - genisoimage
       env:
-        - CONFIG="--disable-containers --enable-fdt=system --audio-drv-list=sdl
-                  --disable-user --target-list-exclude=${MAIN_SYSTEM_TARGETS}"
+        - CONFIG="--disable-containers --audio-drv-list=sdl --disable-user
+            --target-list=arm-softmmu,avr-softmmu,microblaze-softmmu,sh4eb-softmmu,sparc64-softmmu,xtensaeb-softmmu"
 
     - name: "[s390x] GCC (user)"
       arch: s390x
@@ -240,6 +240,7 @@ jobs:
           - flex
           - bison
       env:
+        - TEST_CMD="make check check-tcg V=1"
         - CONFIG="--disable-containers --disable-system"
 
     - name: "[s390x] Clang (disable-tcg)"