pld: add support for altera/intel devices

Change-Id: I7977d39c9037ae71139f78c8d381f5f925dc3489
Signed-off-by: Daniel Anselmi <danselmi@gmx.ch>
Reviewed-on: https://review.openocd.org/c/openocd/+/7355
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>

tcl/cpld/altera-maxii.cfg

@@ -0,0 +1,21 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# Altera MAXII CPLD
+
+if { [info exists CHIPNAME] } {
+	set _CHIPNAME $CHIPNAME
+} else {
+	set _CHIPNAME maxii
+}
+
+# see MAX II Device Handbook
+# Table 3-3: 32-Bit MAX II Device IDCODE
+# Version     Part Number             Manuf. ID        LSB
+# 0000        0010 0000 1010 0001     000 0110 1110    1
+jtag newtap $_CHIPNAME tap -irlen 10 \
+	-expected-id 0x020a10dd \
+	-expected-id 0x020a20dd \
+	-expected-id 0x020a30dd \
+	-expected-id 0x020a40dd \
+	-expected-id 0x020a50dd \
+	-expected-id 0x020a60dd