tcl/target/lpc8nxx: drop swj on swd only target

Historically swj_newdap was necessary to handle HLA properly
Since commit 60f104f450 ("hla_transport: split command
registration per transport") there is no point in using
swj_newdap on SWD only devices.

There are no relevant board files.

Change-Id: Id66a808475f061307fc6a0b3e0d2a9840b543e7f
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/9437
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Tested-by: jenkins

tcl/target/lpc8nxx.cfg

@@ -5,8 +5,8 @@
 # Based on NXP proposal https://community.nxp.com/message/1011149
 # Many thanks to Dries Moors from NXP support.
 # SWD only transport
+transport select swd
 
-source [find target/swj-dp.tcl]
 source [find mem_helper.tcl]
 
 if { [info exists CHIPNAME] } {
@@ -15,7 +15,7 @@ if { [info exists CHIPNAME] } {
 	set  _CHIPNAME lpc8nxx
 }
 
-swj_newdap $_CHIPNAME cpu -irlen 4 -expected-id 0
+swd newdap $_CHIPNAME cpu -expected-id 0
 dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
 
 set _TARGETNAME $_CHIPNAME.cpu