[build][alln] Fix Zircon library dependency

This CL depends on [1] being submitted first to fuchsia.git

It updates references to the zircon library into a proper target
dependency. This is required to move the sysroot generation to the
Fuchsia build.

Bug: 60613
Testing: Does not change the build.

[1] https://fuchsia-review.googlesource.com/c/fuchsia/+/433557

Change-Id: I82b88bb8d300f6e08c4040825f4128da9ecd2c07
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/sbase/+/434758
Reviewed-by: Petr Hosek <phosek@google.com>
diff --git a/BUILD.gn b/BUILD.gn
index fa87a52..832d457 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -146,25 +146,20 @@
   executable(bin + "_bin") {
     output_name = bin
 
-    sources = [
-      "$bin.c",
-    ]
-
-    libs = [ "zircon" ]
+    sources = [ "$bin.c" ]
 
     deps = [
       "libutf",
       "libutil",
       "//sdk/lib/fdio",
+      "//src/zircon/lib/zircon",
     ]
 
     configs += [ ":sbase_config" ]
   }
 
   package(bin) {
-    deps = [
-      ":${bin}_bin",
-    ]
+    deps = [ ":${bin}_bin" ]
 
     binaries = [
       {