New Boards: Pimoroni Blinky 2350 and Badger 2350 (#5434)

* Prepares target for Piromoni Blinky 2350

* Adds target for Piromoni Badger 2350

* Updates submodules

* Removes redundant csv mention

* Revert "Updates submodules"

This reverts commit f05c2e1f2b.

targets/badger2350.json

@@ -0,0 +1,9 @@
+{
+    "inherits": ["rp2350"],
+    "build-tags": ["badger2350"],
+    "serial-port": ["2e8a:0005"],
+    "default-stack-size": 8192,
+    "ldflags": [
+        "--defsym=__flash_size=16M"
+    ]
+}

targets/blinky2350.json

@@ -0,0 +1,9 @@
+{
+    "inherits": ["rp2350"],
+    "build-tags": ["blinky2350"],
+    "serial-port": ["2e8a:0005"],
+    "default-stack-size": 8192,
+    "ldflags": [
+        "--defsym=__flash_size=16M"
+    ]
+}