swconfig: revert the portmapping patches, they seem to cause a segfault

Revert "kernel/swconfig: remove obsolete portmapping feature from swconfig"

This reverts commit 675407baa4.

Revert "swconfig: remove obsolete portmapping feature"

This reverts commit fca1eb349e.

Signed-off-by: John Crispin <john@phrozen.org>

target/linux/generic/files/include/uapi/linux/switch.h

@@ -39,6 +39,7 @@ enum {
 	SWITCH_ATTR_NAME,
 	SWITCH_ATTR_VLANS,
 	SWITCH_ATTR_PORTS,
+	SWITCH_ATTR_PORTMAP,
 	SWITCH_ATTR_CPU_PORT,
 	/* attributes */
 	SWITCH_ATTR_OP_ID,
@@ -56,6 +57,14 @@ enum {
 	SWITCH_ATTR_MAX
 };
 
+enum {
+	/* port map */
+	SWITCH_PORTMAP_PORTS,
+	SWITCH_PORTMAP_SEGMENT,
+	SWITCH_PORTMAP_VIRT,
+	SWITCH_PORTMAP_MAX
+};
+
 /* commands */
 enum {
 	SWITCH_CMD_UNSPEC,