pld: add support for lattice certus devices

Change-Id: Ic50a724e5793000fca11f35ba848c2d317c3cbab
Signed-off-by: Daniel Anselmi <danselmi@gmx.ch>
Reviewed-on: https://review.openocd.org/c/openocd/+/7398
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>

tcl/fpga/lattice_certus.cfg

@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+if { [info exists CHIPNAME] } {
+	set _CHIPNAME $_CHIPNAME
+} else {
+	set _CHIPNAME certus
+}
+
+# Lattice Certus
+#
+# Certus NX LFD2NX-17     0x310f0043
+# Certus NX LFD2NX-40     0x310f1043
+
+
+jtag newtap $_CHIPNAME tap -irlen 8 -irmask 0x83 -ircapture 0x1 \
+	-expected-id 0x310F1043 -expected-id 0x310F0043
+
+pld device lattice $_CHIPNAME.tap