Enable clone-depth=1 for prebuilt hikey960-kernel binaries

Usually we are only interested in the latest commit of any
prebuilt binaries project.

Change-Id: Id76269b9bf2c27aac21eeb9adcc4d9539b0be77b
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
diff --git a/db4alo.xml b/db4alo.xml
index f576396..bbad716 100644
--- a/db4alo.xml
+++ b/db4alo.xml
@@ -4,5 +4,5 @@
 
     <!-- Projects from https://source.devboardsforandroid.linaro.org -->
     <project path="device/linaro/hikey960" name="device/linaro/hikey960" remote ="db4alo" revision="main" groups="device,hikey,pdk" />
-    <project path="device/linaro/hikey960-kernel" name="device/linaro/hikey960-kernel" remote ="db4alo" revision="main" groups="device,hikey,pdk" />
+    <project path="device/linaro/hikey960-kernel" name="device/linaro/hikey960-kernel" remote ="db4alo" revision="main" groups="device,hikey,pdk" clone-depth="1" />
 </manifest>