gitignore: Ignore temporary build files

Signed-off-by: Wendy Liang <jliang@xilinx.com>
.gitignore: Add *.a into .gitigore file

*.a are files generated during build, don't need to version control them.

Signed-off-by: Wendy Liang <jliang@xilinx.com>
libs: system: zc702evk: baremetal: Makefile line ending style

Change libs/system/zc702evk/baremetal/Makefile line ending style
to unix style.

Signed-off-by: Wendy Liang <jliang@xilinx.com>
libs: zc702evk: baremetal: corret LIB macro in makefile

Corret the library macro of clean target in makefile to
actually remove the generated library.

Add a .build/ directory to keep all the object files.

Signed-off-by: Wendy Liang <jliang@xilinx.com>
Delete *.a files

*.a files are generated by build, don't need to version control them

Signed-off-by: Wendy Liang <jliang@xilinx.com>
proxy: linux: userspace: proxy_app.c: wait after terminate

Before release remoteproc after sending terminating message, it needs
to wait for some time for remote do finish termination to release resource.

Signed-off-by: Wendy Liang <jliang@xilinx.com>