cpld: altera-epm240: Add additional IDCODEs

This adds some additional IDCODEs from the datasheet. It also adds
support for customizing the tap name.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Change-Id: I7cda10b92c229b61836c12cd9ca410de358ede2e
Reviewed-on: https://review.openocd.org/c/openocd/+/6846
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>

tcl/cpld/altera-epm240.cfg

@@ -1,6 +1,19 @@
 # Altera MAXII EPM240T100C CPLD
+
+if { [info exists CHIPNAME] } {
+	set _CHIPNAME $CHIPNAME
+} else {
+	set _CHIPNAME epm240
+}
+
 # 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 epm240 tap -expected-id 0x020a10dd -irlen 10
+jtag newtap $_CHIPNAME tap -irlen 10 \
+	-expected-id 0x020a10dd \
+	-expected-id 0x020a20dd \
+	-expected-id 0x020a30dd \
+	-expected-id 0x020a40dd \
+	-expected-id 0x020a50dd \
+	-expected-id 0x020a60dd