Handle clangPostFlags for Android

BUG=None
TEST=None

Change-Id: I55bf76106eb1635c0bb4b936eaf3b96eef1dbb44
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/2490653
Reviewed-by: George Burgess <gbiv@chromium.org>
Tested-by: George Burgess <gbiv@chromium.org>
diff --git a/compiler_wrapper/compiler_wrapper.go b/compiler_wrapper/compiler_wrapper.go
index aa52dfd..2b9459e 100644
--- a/compiler_wrapper/compiler_wrapper.go
+++ b/compiler_wrapper/compiler_wrapper.go
@@ -80,6 +80,7 @@
 		case clangType:
 			mainBuilder.addPreUserArgs(mainBuilder.cfg.clangFlags...)
 			mainBuilder.addPreUserArgs(mainBuilder.cfg.commonFlags...)
+			mainBuilder.addPostUserArgs(mainBuilder.cfg.clangPostFlags...)
 			if _, err := processGomaCccFlags(mainBuilder); err != nil {
 				return 0, err
 			}