ANDROID: build: Add dtb.img to dist dir for VM builds

Currently, the DTB img is not included in the output directory for
VM builds.

Add the kernel_images rule output to the dist directory list so the
dtb.img is copied.

Change-Id: Iefefa83041c7dec4e1ded4f4d7da5f8412b0e1fc
Signed-off-by: John Moon <quic_johmoo@quicinc.com>

msm_kernel_vm.bzl

@@ -194,6 +194,7 @@ def _define_kernel_dist(target, msm_target, variant):
     msm_dist_targets = [
         # do not sort
         ":{}".format(target),
+        ":{}_images".format(target),
         ":{}_merged_kernel_uapi_headers".format(target),
         ":{}_build_config".format(target),
         ":signing_key",