[Fix AMD CI] VRAM cleanup (#11174)

Co-authored-by: root <root@smci350-zts-gtu-e17-15.zts-gtu.dcgpu>

test/srt/run_suite.py

@@ -2,6 +2,7 @@ import argparse
 import glob
 from dataclasses import dataclass
 
+from sglang.srt.utils import is_hip
 from sglang.test.test_utils import run_unittest_files
 
 
@@ -368,7 +369,7 @@ if __name__ == "__main__":
     arg_parser.add_argument(
         "--timeout-per-file",
         type=int,
-        default=1200,
+        default=1500 if is_hip() else 1200,
         help="The time limit for running one file in seconds.",
     )
     arg_parser.add_argument(