build(changelog): add a valid scope for partition code

Add a valid scope for the partition code under the drivers directory.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Change-Id: I173ac45e4ccbc95566277dabef15dcd25533e097
diff --git a/changelog.yaml b/changelog.yaml
index 4e187ef..b591da3 100644
--- a/changelog.yaml
+++ b/changelog.yaml
@@ -566,6 +566,9 @@
                 deprecated:
                   - spi_nand
 
+      - title: Partition
+        scope: partition
+
       - title: SCMI
         scope: scmi