xmutil: Printing short description for each command
xmutil: Printing short description for each command

Printing short description for each command with -h input

Signed-off-by: Jaewon Lee <1b369288d13b7b5cc9a37dd614e864b90fd18321@xilinx.com>

Xilinx/meta-petalinux,Xilinx/meta-petalinux,Xilinx/meta-petalinux,Xilinx/meta-petalinux,Xilinx/meta-petalinux,Xilinx/meta-petalinux