[AMD CI] re-enable testcases missed when migrating ci test files (#16535)

Co-authored-by: michael-amd <michael.zhang@amd.com>
Co-authored-by: yctseng0211 <yctseng@amd.com>

test/registered/lora/test_multi_lora_backend.py

@@ -16,7 +16,7 @@ import multiprocessing as mp
 import os
 import unittest
 
-from sglang.test.ci.ci_register import register_cuda_ci
+from sglang.test.ci.ci_register import register_amd_ci, register_cuda_ci
 from sglang.test.lora_utils import (
     ALL_OTHER_MULTI_LORA_MODELS,
     CI_MULTI_LORA_MODELS,
@@ -25,6 +25,7 @@ from sglang.test.lora_utils import (
 from sglang.test.test_utils import CustomTestCase, is_in_ci
 
 register_cuda_ci(est_time=60, suite="stage-b-test-small-1-gpu")
+register_amd_ci(est_time=60, suite="stage-b-test-small-1-gpu")
 
 # All prompts are used at once in a batch.
 PROMPTS = [