kinect_fetch_fw: use readlink -m when setting FW_DESTDIR

This way the normalization succeeds even when the parent directory in
"$1" does not exists.

For example, if FW_DESTDIR is going to be set to /lib/firmware/kinect
but /lib/firmware does not exist yet, there is no reason to fail as the
install command below is going to create all the needed sub-paths.

diff --git a/kinect_fetch_fw b/kinect_fetch_fw
index 519488f..081d3d5 100755 (executable)
--- a/kinect_fetch_fw
+++ b/kinect_fetch_fw
@@ -22,7 +22,7 @@ SDK_URL=${SDK_URL:-"http://download.microsoft.com/download/F/9/9/F99791F2-D5BE-4
 SDK_MD5="40764fe9e00911bda5095e5be777e311"
 
 [ $# -lt 1 ] && { echo "usage: $(basename "$0") <firmware destdir> [<path of kinect_upload_fw binary>]" 1>&2; exit 1; }
-FW_DESTDIR=$(readlink -f $1)
+FW_DESTDIR=$(readlink -m $1)
 LOADER_PATH=${2:-"/usr/local/sbin/kinect_upload_fw"}
 
 command -v wget >/dev/null 2>&1 || { echo "$(basename "$0"): command 'wget' is needed." 1>&2 ; exit 1; }