hil: give lpcxpresso55s28 an OpenOCD debugger entry for agentrc's debug scripts

test/hil/hil_test.py

diff --git a/test/hil/hil_test.py b/test/hil/hil_test.py
index 66a210e..ec8dbe4 100755
--- a/test/hil/hil_test.py
+++ b/test/hil/hil_test.py
@@ -213,6 +213,7 @@
     logger: NotRequired[str]  # "rtt": console = the debug probe's RTT channel 0, not a VCOM (rtt skill)
     toolchain: NotRequired[str]  # CI build bucket override, e.g. "riscv-gcc" (consumed by hil_ci_set_matrix.py)
     uart_uid: NotRequired[str]   # console bridge serial when the flasher probe has no CDC (e.g. J-Trace)
+    debugger: NotRequired[FlasherCfg]  # probe entry for agentrc's debug scripts (rtt, target-debug), not read here
 
 
 class HilConfig(TypedDict):

test/hil/tinyusb.json

diff --git a/test/hil/tinyusb.json b/test/hil/tinyusb.json
index a1c6cbd..e77c37e 100644
--- a/test/hil/tinyusb.json
+++ b/test/hil/tinyusb.json
@@ -280,6 +280,12 @@
                 "uid": "GSA0CQEQ",
                 "vid_pid": "0x1fc9 0x0090",
                 "args": "-t lpc55s28"
+            },
+            "debugger": {
+                "name": "openocd",
+                "uid": "GSA0CQEQ",
+                "vid_pid": "0x1fc9 0x0090",
+                "args": "-f interface/cmsis-dap.cfg -c \"transport select swd\" -c \"adapter speed 1000\" -c \"swd newdap lpc55s28 cpu -expected-id 0x6ba02477\" -c \"dap create lpc55s28.dap -chain-position lpc55s28.cpu\" -c \"target create lpc55s28.cpu cortex_m -dap lpc55s28.dap -ap-num 0\""
             }
         },
         {