tcl/target/gd32vf103: simplify passing of reset halt option

The pluggable reset events are invoked only in the context of
proc ocd_process_reset_inner, so we can use $halt variable
directly and avoid proc init_reset redefinition.

Change-Id: Ie74c340c51cb2c55d8ffc9f74bb1a1a8e3461515
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/9315
Tested-by: jenkins
Reviewed-by: Tom Hebb <tommyhebb@gmail.com>
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>

tcl/target/gd32vf103.cfg

@@ -96,7 +96,7 @@ $_TARGETNAME configure -event reset-assert {
 	# Since haltreq is write-only and there's no way to leave it unchanged,
 	# we'd have to figure out its proper value anyway.
 	set val $dmcontrol_dmactive
-	if {$_RESETMODE ne "run"} {
+	if {$halt} {
 		set val [expr {$val | $dmcontrol_haltreq}]
 	}
 	riscv dmi_write $dmcontrol $val
@@ -131,14 +131,3 @@ $_TARGETNAME configure -event reset-deassert-post {
 		}
 	}
 }
-
-# Capture the mode of a given reset so that we can use it later in the
-# reset-assert handler.
-proc init_reset { mode } {
-	global _RESETMODE
-	set _RESETMODE $mode
-
-	if {[using_jtag]} {
-		jtag arp_init-reset
-	}
-}