Update linkerconfig to target out directory

Current linkerconfig targets for specific output file. However,
linkerconfig will generate more than 1 file based on APEX modules, so it
should take argument for target directory rather than target file. This
change updates linkerconfig's argument to point output directory.

Bug: 146993126
Test: m -j passed & Cuttlefish succeeded to boot
Change-Id: I3a720a047077688582436aabd307adafeafc5398
diff --git a/rootdir/init.rc b/rootdir/init.rc
index fdfcde8..635674f 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -43,7 +43,7 @@
     mkdir /linkerconfig/default 0755
 
     # Generate ld.config.txt for early executed processes
-    exec -- /system/bin/linkerconfig --target /linkerconfig/bootstrap/ld.config.txt
+    exec -- /system/bin/linkerconfig --target /linkerconfig/bootstrap
     chmod 644 /linkerconfig/bootstrap/ld.config.txt
     copy /linkerconfig/bootstrap/ld.config.txt /linkerconfig/default/ld.config.txt
     chmod 644 /linkerconfig/default/ld.config.txt