CI: Cover RISC-V targets

Add qemuriscv64 and sifive-fu540 targets to CI build for RISC-V arch
and Debian Sid Ports support testing.

Signed-off-by: Anton Mikanovich <amikan@ilbers.de>

testsuite/build_test/build_test.py

@@ -129,6 +129,8 @@ class NoCrossTest(CIBaseTest):
             'mc:qemumipsel-stretch:isar-image-base',
             'mc:qemumipsel-buster:isar-image-base',
             'mc:qemumipsel-bullseye:isar-image-base',
+            'mc:qemuriscv64-sid-ports:isar-image-base',
+            'mc:sifive-fu540-sid-ports:isar-image-base',
             'mc:nand-ubi-demo-bullseye:isar-image-ubi',
             'mc:rpi-stretch:isar-image-base',
             'mc:hikey-bullseye:isar-image-base',