build(changelog): add new scope for TI platform

Add new scope for TI and K3 platforms.

Change-Id: I3b666c73e3ee8bcf73fcd155b7a372f44b56b033
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
diff --git a/changelog.yaml b/changelog.yaml
index fa42e96..53fd113 100644
--- a/changelog.yaml
+++ b/changelog.yaml
@@ -432,6 +432,13 @@
             deprecated:
               - plat/st/stm32mp1
 
+      - title: Texas Instruments
+        scope: ti
+
+        subsections:
+          - title: K3
+            scope: k3
+
       - title: Xilinx
         scope: xilinx