Move linkerconfig to Runtime APEX

Move linkerconfig to Runtime APEX for better updatability. linkerconfig
shared ld.config.txt format with linker, so it is better that linker and
linkerconfig to be updated together. This change moves linkerconfig into
Runtime APEX.

Bug: 165769179
Test: Cuttlefish boot succeeded
Change-Id: I81e2a547804ab9f796c00af382ae43e35c8459ef
diff --git a/apex/Android.bp b/apex/Android.bp
index 5bf078a..c97eb15 100644
--- a/apex/Android.bp
+++ b/apex/Android.bp
@@ -26,6 +26,9 @@
         "libc_malloc_debug",
         "libc_malloc_hooks",
     ],
+    binaries: [
+        "linkerconfig",
+    ],
     multilib: {
         both: {
             binaries: [