build: envsetup: Update CAF remote

CAF recommends using https://source.codeaurora.org/quic/la now.

Change-Id: Ic8d6451111f0e71bce044ffaae79f0acfc34caa1
diff --git a/build/envsetup.sh b/build/envsetup.sh
index 3559149..509f681 100644
--- a/build/envsetup.sh
+++ b/build/envsetup.sh
@@ -285,7 +285,7 @@
     then
         PFX="platform/"
     fi
-    git remote add caf git://codeaurora.org/$PFX$PROJECT
+    git remote add caf https://source.codeaurora.org/quic/la/$PFX$PROJECT
     echo "Remote 'caf' created"
 }