xfail pr18223 test for tic6x

[Alan Modra]

Fails due to
warning: generating a shared library containing non-PIC/PID code

	* ld-gc/pr18223.d: xfail tic6x.

diff --git a/ld/testsuite/ld-gc/pr18223.d b/ld/testsuite/ld-gc/pr18223.d
index 9fd1912..21b7c53 100644
--- a/ld/testsuite/ld-gc/pr18223.d
+++ b/ld/testsuite/ld-gc/pr18223.d
@@ -1,6 +1,7 @@
 #name: --gc-sections with .text._init
 #ld: --gc-sections -shared
 #nm: -n
+#xfail: tic6x-*-*
 
 #...
 [0-9a-f]+ t +_init

-- 
Alan Modra
Australia Development Lab, IBM