tests: kernel: add qemu_riscv to no-multithreading tests

Add qemu_riscv32, qemu_riscv32e, and qemu_riscv64 targets
to the tests that list below. These set CONFIG_MULTITHREADING=n.

- tests/kernel/fatal/no-multithreading
- tests/kernel/mem_heap/mheap_api_concept
- tests/kernel/mem_slab/mslab_api
- tests/kernel/threads/no-multithreading

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@fujitsu.com>

tests/kernel/fatal/no-multithreading/testcase.yaml

@@ -4,6 +4,9 @@ common:
     - qemu_arc_em
     - qemu_arc_hs
     - qemu_arc_hs6x
+    - qemu_riscv32
+    - qemu_riscv32e
+    - qemu_riscv64
     - nsim_em
     - nsim_em7d_v22
     - nsim_hs

tests/kernel/mem_heap/mheap_api_concept/testcase.yaml

@@ -21,6 +21,9 @@ tests:
       - qemu_arc_em
       - qemu_arc_hs
       - qemu_arc_hs6x
+      - qemu_riscv32
+      - qemu_riscv32e
+      - qemu_riscv64
     integration_platforms:
       - qemu_cortex_m3
     extra_configs:

tests/kernel/mem_slab/mslab_api/testcase.yaml

@@ -19,6 +19,9 @@ tests:
       - qemu_arc_em
       - qemu_arc_hs
       - qemu_arc_hs6x
+      - qemu_riscv32
+      - qemu_riscv32e
+      - qemu_riscv64
     integration_platforms:
       - qemu_cortex_m3
       - qemu_arc_hs

tests/kernel/threads/no-multithreading/testcase.yaml

@@ -19,5 +19,8 @@ tests:
       - qemu_arc_em
       - qemu_arc_hs
       - qemu_arc_hs6x
+      - qemu_riscv32
+      - qemu_riscv32e
+      - qemu_riscv64
     integration_platforms:
       - qemu_cortex_m0