target/ast10x0: extend target_ast10x0 visibility to //drivers:__subpackages__

target/ast10x0/BUILD.bazel

diff --git a/target/ast10x0/BUILD.bazel b/target/ast10x0/BUILD.bazel
index 8d018f4..231f5fa 100644
--- a/target/ast10x0/BUILD.bazel
+++ b/target/ast10x0/BUILD.bazel
@@ -49,7 +49,7 @@
     constraint_setting = "@pigweed//pw_kernel/target:target",
     visibility = [
         ":__subpackages__",
-        "//drivers/...",
+        "//drivers:__subpackages__",
     ],
 )