libnsbmp: Fix build

:Release Notes:
Modify bug for qemux86 build.

:Detailed Notes:
Remove -Wl which was passed to g++ and build was failing with
i586-webos-linux-gcc: error: unrecognized command line option '-Wl'

:Testing Performed:
Check build success and make dynamic library, qemux86 as well.

:QA Notes:

:Issues Addressed:
[GF-38319] CCC: replace-makefile-with-cmake.patch for libnsbmp v0.1.0

Open-webOS-DCO-1.0-Signed-off-by: wonkyo.seo <wonkyo.seo@lge.com>

Change-Id: I4405c44532d199519bd64fd92c5eddc638e47929
Reviewed-on: https://g2g.palm.com/3435
Reviewed-by: Martin Jansa <Martin.Jansa@lge.com>
Reviewed-by: Build Verification
Reviewed-by: Susan Montooth <susan.montooth@lge.com>
Tested-by: Susan Montooth <susan.montooth@lge.com>