llvm-bpf: support creating a tarball in bin

This can be used for adding the toolchain to an existing tree without having
to build it from scratch.
Enable building the toolchain + tarball by default on buildbot

Signed-off-by: Felix Fietkau <nbd@nbd.name>

target/sdk/Makefile

@@ -34,7 +34,8 @@ EXCLUDE_DIRS:= \
 	*.install.flags \
 	*.install \
 	*/doc \
-	*/share/locale
+	*/share/locale \
+	*/llvm-bpf*
 
 SDK_DIRS = \
 		$(STAGING_SUBDIR_HOST) \