check-pause-resume.sh: add $TOPDIR variable

So we can invoke other tools easily.

Signed-off-by: Marc Herbert <marc.herbert@intel.com>

Author: marc-hb

test-case/check-pause-resume.sh

@@ -17,8 +17,9 @@ set -e
 ##    no error happen for aplay/arecord
 ##
 
+TOPDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")"/.. && pwd)
 # shellcheck source=case-lib/lib.sh
-source "$(dirname "${BASH_SOURCE[0]}")"/../case-lib/lib.sh
+source "$TOPDIR"/case-lib/lib.sh
 
 OPT_NAME['t']='tplg'     OPT_DESC['t']='tplg file, default value is env TPLG: $''TPLG'
 OPT_HAS_ARG['t']=1         OPT_VAL['t']="$TPLG"