Update Dell VEP4600: fix console ports, add management interfaces and expansion slots (#3994)

- Fix comments typo (VEP4660 → VEP4600)
- Add Micro-USB and DE-9 serial console ports (were RJ-45)
- Add management interfaces (CPU, BMC) with mgmt_only flag
- Add expansion slot module bays
- Rename interfaces to match data sheet naming

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: konoe-akitoshi

device-types/Dell/VEP4600.yml

@@ -4,32 +4,44 @@ model: VEP4600
 description: Dell Virtual Edge Platform 4600
 slug: dell-vep4600
 part_number: vep4600
-comments: '[Dell Virtual Edge Platform 4660 Data Sheet](https://www.delltechnologies.com/asset/en-gb/products/networking/technical-support/virtual-edge-platform-4600-spec-sheet.pdf)'
+comments: '[Dell Virtual Edge Platform 4600 Data Sheet](https://www.delltechnologies.com/asset/en-gb/products/networking/technical-support/virtual-edge-platform-4600-spec-sheet.pdf)'
 u_height: 1
 weight: 7.43
 weight_unit: kg
 is_full_depth: true
 airflow: front-to-rear
 console-ports:
-  - name: CPU
-    type: rj-45
-  - name: BMC
-    type: rj-45
-module-bays:
-  - name: Power 1
-    position: PSU1
-  - name: Power 2
-    position: PSU2
+  - name: Console (Micro-USB)
+    type: usb-micro-b
+  - name: Console CPU (Serial)
+    type: de-9
+  - name: Console BMC (Serial)
+    type: de-9
 interfaces:
-  - name: Gig-E 3
+  - name: 1GE 1
     type: 1000base-t
-  - name: Gig-E 4
+  - name: 1GE 2
     type: 1000base-t
-  - name: Gig-E 5
+  - name: 1GE 3
     type: 1000base-t
-  - name: Gig-E 6
+  - name: 1GE 4
     type: 1000base-t
-  - name: 10GbE 1
+  - name: 10GE 1
     type: 10gbase-x-sfpp
-  - name: 10GbE 2
+  - name: 10GE 2
     type: 10gbase-x-sfpp
+  - name: Management (CPU)
+    type: 1000base-t
+    mgmt_only: true
+  - name: Management (BMC)
+    type: 1000base-t
+    mgmt_only: true
+module-bays:
+  - name: Power 1
+    position: PSU1
+  - name: Power 2
+    position: PSU2
+  - name: Expansion Slot 1
+    position: Slot1
+  - name: Expansion Slot 2
+    position: Slot2