ANDROID: kleaf: load() then package().

According to https://bazel.build/build/style-guide#file-structure,
package() comes after load().

Test: treehugger
Bug: 250646733
Change-Id: Ie5d5b6fda6fec4976d82099fa907af2c9d3bd1dc
Signed-off-by: Yifan Hong <elsk@google.com>

BUILD.bazel

@@ -11,14 +11,15 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
+load("//build/kernel/kleaf:common_kernels.bzl", "define_common_kernels")
+
 package(
     default_visibility = [
         "//visibility:public",
     ],
 )
 
-load("//build/kernel/kleaf:common_kernels.bzl", "define_common_kernels")
-
 _aarch64_additional_kmi_symbol_lists = [
     # keep sorted
     "android/abi_gki_aarch64_core",