tcl/target: add Realtek RTL872xD config

Sufficient to probe both cores via multiple APs.
No support listed for jtag in the datasheet or usermanual.
Tested against a BW-16 board:
  https://www.amebaiot.com/en/amebad/#partner_bw16

Change-Id: Idf82085e7b7327fdf3d6d668e6fb59eff6e0431b
Signed-off-by: Karl Palsson <karlp@tweak.au>
Reviewed-on: https://review.openocd.org/c/openocd/+/7847
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Tested-by: jenkins

tcl/target/rtl872xd.cfg

@@ -0,0 +1,33 @@
+# SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+# Realtek RTL872xD (ARM Cortex-M33 + M23, wifi+bt dualband soc)
+
+# HLA does not support AP other than 0
+if { [using_hla] } {
+        echo "ERROR: HLA transport cannot work with this target."
+        shutdown
+}
+
+source [find target/swj-dp.tcl]
+
+if { [info exists CHIPNAME] } {
+        set _CHIPNAME $CHIPNAME
+} else {
+        set _CHIPNAME rtl872xd
+}
+
+if { [info exists CPUTAPID] } {
+        set _CPUTAPID $CPUTAPID
+} else {
+        set _CPUTAPID 0x6ba02477
+}
+
+swj_newdap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
+dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
+
+set _TARGETNAME $_CHIPNAME.cpu
+target create $_TARGETNAME.km0 cortex_m -endian little -dap $_CHIPNAME.dap -ap-num 1
+target create $_TARGETNAME.km4 cortex_m -endian little -dap $_CHIPNAME.dap -ap-num 2
+
+cortex_m reset_config sysresetreq
+
+adapter speed 1000