[ot] scripts/opentitan: add missing DTM files to clang format config file

Signed-off-by: Emmanuel Blot <eblot@rivosinc.com>

Author: rivos-eblot

scripts/opentitan/clang-format.d/opentitan.lst

@@ -4,13 +4,15 @@ hw/opentitan/*.c
 hw/opentitan/*.h
 hw/riscv/debug.c
 hw/riscv/dm*.c
+hw/riscv/dtm*.c
 hw/riscv/ibex*.c
 hw/riscv/ot_*.c
 include/hw/jtag/*.h
 include/hw/misc/pulp_rv_dm.h
 include/hw/opentitan/*.h
 include/hw/riscv/debug.h
 include/hw/riscv/dm*.h
+include/hw/riscv/dtm*.h
 include/hw/riscv/ibex*.h
 include/hw/riscv/ot_*.h
 target/riscv/ibex*.c