gn_build.sh: Don't forget to build libCHIP.a (#1543)
Building "check" builds all tests, which builds most of the code, but
doesn't produce libCHIP.a. Fix this by also building "all".
The instructions are correct, it's just the script assuming check
implies a full build (it could, but maybe it's better to preserve a way
to only run tests?)
diff --git a/gn_build.sh b/gn_build.sh
index 88bd978..ec6f530 100755
--- a/gn_build.sh
+++ b/gn_build.sh
@@ -54,7 +54,7 @@
_chip_banner "Build: Ninja build"
-time ninja -C "$CHIP_ROOT/out/debug" check
+time ninja -C "$CHIP_ROOT/out/debug" all check
echo
echo 'To activate existing build environment in your shell, run (do this first):'
