[entropy_src] Move ENTROPY_SRC version 2.0.0 verification_stage to V2S

Upstream OpenTitan commit 509b468edd684eeb7f59a99e93f2903edb85b69b

This resolves lowRISC/opentitan#22469.

The following files are changed in OpenTitan commit but not included:
- hw/ip/entropy_src/doc/checklist.md

Signed-off-by: Pirmin Vogel <[email protected]>
Co-authored-by: Gary Guo <[email protected]>
Signed-off-by: Gary Guo <[email protected]>

Author: vogelpi

src/entropy_src/data/entropy_src.hjson

@@ -22,7 +22,7 @@
   version:            "2.0.0",
   life_stage:         "L1",
   design_stage:       "D2S",
-  verification_stage: "V1",
+  verification_stage: "V2S",
   dif_stage:          "S2",
   clocking: [{clock: "clk_i", reset: "rst_ni"}],
   bus_interfaces: [

src/entropy_src/data/entropy_src.json

@@ -11,7 +11,7 @@
   "version": "2.0.0",
   "life_stage": "L1",
   "design_stage": "D2S",
-  "verification_stage": "V1",
+  "verification_stage": "V2S",
   "dif_stage": "S2",
   "clocking": [
     {