Update linker config location

Linker config location has been changed to /linkerconfig recently to
avoid a chroot issue from art test. To fit this in current test, I just
updated the path from /dev/linkerconfig to /linkerconfig to make ART
test to work with latest code.

Bug: 143458513
Test: m -j passed
Change-Id: I5326959ce98efefbbb4cdb9308f48f21b465fcb9
diff --git a/tools/setup-buildbot-device.sh b/tools/setup-buildbot-device.sh
index c2451d3..46969c8 100755
--- a/tools/setup-buildbot-device.sh
+++ b/tools/setup-buildbot-device.sh
@@ -111,7 +111,7 @@
 fi
 
 echo -e "${green}Set sys.linker.use_generated_config to false if file is absent"
-adb shell "test -f /dev/linkerconfig/ld.config.txt || setprop sys.linker.use_generated_config false"
+adb shell "test -f /linkerconfig/ld.config.txt || setprop sys.linker.use_generated_config false"
 
 # Chroot environment.
 # ===================