Fix duplicate symbols error in external/squashfs-tools am: 19b288b3c8 am: cf2d6206a2 am: 6afb0f6eb7

Original change: https://android-review.googlesource.com/c/platform/external/squashfs-tools/+/2647919

Change-Id: If763dcad553ac6c325d53ef85cdaa43f8945a3d3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/squashfs-tools/Android.bp b/squashfs-tools/Android.bp
index 6431f54..95985fa 100644
--- a/squashfs-tools/Android.bp
+++ b/squashfs-tools/Android.bp
@@ -37,6 +37,7 @@
         "-DZSTD_SUPPORT",
         "-DXATTR_SUPPORT",
         "-DXATTR_DEFAULT",
+        "-fcommon",
         "-Wno-unused-parameter",
         "-Wno-sign-compare",
         "-Wno-pointer-arith",