fwk/gh-actions: run ldd in chroot

BUG=It's not very useful to run outside of the chroot where it cannot find
all the libraries.
BRANCH=fwk-main
TEST=ldd on gh actions show and finds all libraries
TEST=Check that ldd can find all dynamic libraries

Signed-off-by: Daniel Schaefer <dhs@frame.work>
(cherry picked from commit e01bc1a)

Author: JohnAZoidberg

.github/workflows/zephyr-build.yml

@@ -108,7 +108,7 @@ jobs:
       - name: Package dynamic libs with util (enough to run ectool)
         run: |
           # Check which libraries it links to
-          ldd src/platform/ec/build/host/util/ectool
+          cros_sdk bash -c 'ldd ../platform/ec/build/host/util/ectool'
           # Copy libraries to util folder so we can run it with
           # sudo LD_LIBRARY_PATH=. ./ectool
           cp chroot/usr/lib64/libec.so src/platform/ec/build/host/util/